Choosing a home theater projector with low input lag means balancing gaming response against image quality, room brightness, placement, and long-term upkeep. My top pick for a flexible mix of 4K, fast response, and a laser light source is the BenQ TK710STi. For the strongest listed refresh-rate and latency combination in a 4K lamp model, the ViewSonic PX701-4K stands out; for a short room and a lower-resolution setup, the BenQ TH671ST is the practical alternative.
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These projectors do not suit the same room or player. Some achieve their lowest published lag at high refresh rates and 1080p, while others pair 4K resolution with more convenient installation or longer-lasting light sources. I rank them by how convincingly they combine responsive gameplay with a useful home-theater image, then weigh placement demands, brightness, and upkeep. The key tradeoff is simple: the fastest advertised mode may not be the mode you use for 4K movies or everyday console gaming.
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Key Takeaways
BenQ TK710STi is my most balanced pick: it pairs 4K, a short-throw laser design, and a stated 4.2ms at 1080p/240Hz.
ViewSonic PX701-4K lists 4.2ms and 240Hz alongside 4K, but its fastest response figure is tied to a specific 1080p high-refresh mode.
BenQ TH671ST prioritizes short-room placement and 1080p gaming; it gives up 4K resolution and wireless features.
BenQ TK700 offers a 4K gaming-and-movie balance with 4.2ms latency, though its lamp-based design adds replacement-life considerations.
Optoma Photon Life PK32 is the portable, low-maintenance choice, but its 1100-lumen rating makes bright-room viewing a weaker fit.
| BenQ TK710STi 4K HDR Short-Throw Laser DLP Gaming Projector with Ceiling Mount |  | Best Overall | Resolution: 3840 × 2160 (4K UHD) | Brightness: 3200 ANSI lumens | Input lag: 4.2ms at 1080p/240Hz | VIEW ON AMAZON | See Our Full Breakdown |
| ViewSonic PX701-4K UHD Projector, 3200 Lumens, 240Hz HDR, Auto Keystone DLP |  | Best for High-Refresh Gaming Value | Native resolution: 3840 × 2160 | Brightness: 3200 lumens | Input lag: 4.2ms listed | VIEW ON AMAZON | See Our Full Breakdown |
| BenQ TK700 4K HDR Home Entertainment Gaming & Movie Projector |  | Best for 4K Gaming and Movies | Native resolution: 3840 × 2160 | Brightness: 3200 lumens | Input lag: 4.2ms listed | VIEW ON AMAZON | See Our Full Breakdown |
| BenQ TH671ST 3000 Lumens 1080p Short Throw Home Entertainment Projector |  | Best for Short Rooms and 1080p Gaming | Native resolution: 1920 × 1080 | Brightness: 3000 lumens | Input lag: Described as low; numerical figure not supplied | VIEW ON AMAZON | See Our Full Breakdown |
| Optoma Photon Life PK32 – 4K UHD, 1100 Lumens, LED, Premium Auto-Setup Home Entertainment & Gaming Projector |  | Best Compact, Low-Maintenance Pick | Resolution: 3840 × 2160 (4K UHD) | Brightness: 1100 lumens | Input lag: 4.6ms at 1080p/240Hz; 16ms at 4K/60Hz | VIEW ON AMAZON | See Our Full Breakdown |
| home theater projector with low input lag | Brightness | Input lag | Connectivity | Light-source life |
|---|---|---|---|---|
| BenQ TK710STi 4K HDR Short-Thr | 3200 ANSI lumens | 4.2ms at 1080p/240Hz | Dual HDMI 2.0b, eARC, Android TV | — |
| ViewSonic PX701-4K UHD Project | 3200 lumens | 4.2ms listed | HDMI, USB | 6000 hours |
| BenQ TK700 4K HDR Home Enterta | 3200 lumens | 4.2ms listed | HDMI, USB 2.0 Type A | 4000 hours |
| BenQ TH671ST 3000 Lumens 1080p | 3000 lumens | Described as low; numerical figure not supplied | HDMI × 2, USB Type A, USB Mini B, VGA, audio in/out | 4000 hours normal; 10,000 hours Eco |
| Optoma Photon Life PK32 | 1100 lumens | 4.6ms at 1080p/240Hz; 16ms at 4K/60Hz | HDMI, USB-C | 30,000 hours |
More Details on Our Top Picks
BenQ TK710STi 4K HDR Short-Throw Laser DLP Gaming Projector with Ceiling Mount
The BenQ TK710STi earns my top spot by bringing together the features that matter to a mixed gaming-and-movie room: 4K UHD, a short-throw laser design, and a stated 4.2ms at 1080p/240Hz. That combination gives it a broader appeal than the TH671ST, which also suits short rooms but is limited to 1080p and uses a lamp. Compared with the TK700, the TK710STi adds a laser source and short-throw positioning, making it easier to place near the screen and less dependent on periodic lamp replacement.
The stated latency figure is tied to 1080p at 240Hz, so buyers should not assume the same response at 4K or every console output setting. Its 3200 ANSI lumens give it a brighter-on-paper starting point than the Optoma PK32, while Android TV offers a built-in streaming path that the listed ViewSonic features do not mention. The short-throw format is useful when furniture or room depth restricts a conventional setup, though buyers still need to check their desired image size against the actual placement requirements.
There are real compromises. The listing describes a premium product, and its built-in speaker is only 5W, so a separate audio system is a better match for a theater-focused room. Laser life is listed at 20,000 hours: a long operating life, but still finite. I would choose this over the PX701-4K for short-throw flexibility and laser convenience; I would choose the ViewSonic instead if I chiefly wanted a 4K lamp projector with a clearly stated 240Hz gaming mode and did not need Android TV.
Pros:- 4K UHD resolution and 3200 ANSI lumens suit movies as well as gaming.
- Short-throw design gives more placement flexibility in a compact room.
- Listed 4.2ms input lag at 1080p/240Hz targets responsive high-refresh play.
- Laser source and built-in Android TV reduce lamp upkeep and separate streaming-device needs.
Cons:- The lowest stated lag is specified for 1080p at 240Hz, not all picture modes.
- Its 5W speaker is modest for a dedicated theater room.
- Laser life is finite, and the product is positioned as a premium option.
Best for: Players who want one short-throw projector for 4K movies and responsive gaming, plus built-in Android TV and a laser light source.
Not ideal for: Buyers who need the lowest-cost setup, rely on a strong built-in speaker, or expect the stated 4.2ms figure to apply at every resolution and refresh rate.
- Resolution:3840 × 2160 (4K UHD)
- Brightness:3200 ANSI lumens
- Input lag:4.2ms at 1080p/240Hz
- Light source:Laser
- Laser life:20,000 hours
- Projection type:Short-throw Laser DLP
- Connectivity:Dual HDMI 2.0b, eARC, Android TV
- Audio:5W speaker; Dolby Atmos support
Our verdict“<p>I would start here for a <strong>well-rounded 4K gaming theater</strong> where short-throw placement and laser convenience matter as much as low lag.</p>”
ViewSonic PX701-4K UHD Projector, 3200 Lumens, 240Hz HDR, Auto Keystone DLP
The ViewSonic PX701-4K makes its case with a compact list of gaming-forward headline specs: 4K resolution, 3200 lumens, and listed 4.2ms input lag with a 240Hz refresh rate. Among these five, it is the clearest match for a buyer who wants a 4K lamp projector and a high-refresh gaming mode without moving to the TK710STi’s laser-and-streaming feature set. Its brightness figure also exceeds the Optoma PK32’s 1100 lumens, making the ViewSonic a more plausible candidate where some room light remains.
The mode details matter. The supplied information associates low lag with a 240Hz mode but does not specify the resolution for its 4.2ms claim here. I would verify supported console or PC output modes before buying, rather than assuming that 4K games run at 240Hz with the same response. That qualification also separates it from the BenQ TK700, whose supplied details state 4.2ms but do not give a refresh-rate condition.
Setup flexibility is a mixed picture: auto-keystone and four-corner adjustment can help square the image when placement is imperfect, but digital correction is not a substitute for checking throw distance and projector alignment. The listing describes a lamp operating life of 6000 hours and does not mention built-in speakers, so plan for external audio and lamp upkeep. Compared with the short-throw TH671ST, this is the more resolution-focused pick; compared with the TK710STi, it gives up the stated laser source and Android TV.
Pros:- 4K resolution, HDR support, and 3200 lumens cover both movies and games.
- Listed 4.2ms input lag and 240Hz refresh rate target high-refresh play.
- Auto-keystone and four-corner adjustment help with imperfect placement.
- A brighter specification than the Optoma PK32 better suits rooms with some ambient light.
Cons:- The supplied lag details do not specify the resolution for the 4.2ms figure.
- Lamp-based operation brings finite light-source life and upkeep.
- Built-in speakers are not listed, so external audio may be needed.
Best for: PC or console players seeking a 4K projector with a listed 240Hz gaming capability and useful image-alignment tools.
Not ideal for: Buyers who require a short-throw installation, built-in streaming, or a stated low-lag figure across specific 4K console modes without checking compatibility.
- Native resolution:3840 × 2160
- Brightness:3200 lumens
- Input lag:4.2ms listed
- Refresh rate:Up to 240Hz listed
- Contrast ratio:12,000:1
- Light-source life:6000 hours
- Projection:DLP, 4K and HDR
- Connectivity:HDMI, USB
Our verdict“<p>I would pick the <strong>PX701-4K for high-refresh gaming features</strong> when I can confirm my source device supports its desired mode and do not need a short-throw or laser setup.</p>”
BenQ TK700 4K HDR Home Entertainment Gaming & Movie Projector
The BenQ TK700 is a straightforward 4K gaming-and-movie option for buyers who want a familiar balance rather than the TK710STi’s short-throw laser package. It lists 4.2ms latency, 3200 lumens, and HDR10 support, with HDMI connections for consoles and laptops. That makes it a credible all-purpose living-room pick on paper: more detailed than the 1080p TH671ST and brighter by specification than the portable Optoma PK32.
Its lag claim does not come with the same mode detail supplied for the TK710STi, which specifies 1080p at 240Hz, or the high-refresh framing provided for the ViewSonic. That does not establish that the TK700 is slower in use; it means a competitive player should confirm the supported resolution and refresh-rate combination for their own source. The BenQ’s 3200-lumen rating also gives it a stronger brightness figure than the PK32, though room lighting, screen size, and image settings still affect perceived picture quality.
The main tradeoff is the lamp-based design, with a listed operating life of 4000 hours, rather than the long-life laser and LED sources in the TK710STi and PK32. Its placement information is thin, and the supplied maximum throw distance is stated as 5 feet, so I would check the full installation chart before committing to a room layout or large screen. Compared with the PX701-4K, the TK700 has a clearer stated HDR10 feature but fewer supplied gaming-mode details. It makes most sense when 4K HDR and gaming are the priorities, not minimal maintenance or fully documented high-refresh operation.
Pros:- 4K resolution and HDR10 support suit film viewing and detailed games.
- Listed 4.2ms latency is aimed at responsive gameplay.
- 3200 lumens provide a higher brightness specification than the Optoma PK32.
- HDMI connectivity supports common console and laptop setups.
Cons:- The supplied 4.2ms claim lacks a specified resolution and refresh-rate condition.
- Lamp life is listed at 4000 hours, shorter than the laser or LED sources in two alternatives.
- Throw and software details are limited in the supplied specifications.
Best for: Movie-and-console households seeking 4K HDR, a bright specification, and a gaming-focused projector without needing built-in streaming.
Not ideal for: Buyers who want a long-life laser source, a clearly documented 240Hz latency mode, or placement flexibility without checking throw requirements.
- Native resolution:3840 × 2160
- Brightness:3200 lumens
- Input lag:4.2ms listed
- HDR:HDR10
- Contrast ratio:10,000:1
- Light-source life:4000 hours
- Connectivity:HDMI, USB 2.0 Type A
- Supported devices:Gaming console, laptop, speaker
Our verdict“<p>I would choose the <strong>TK700 for 4K HDR gaming and movies</strong> if lamp upkeep is acceptable and its installation distance fits my room.</p>”
BenQ TH671ST 3000 Lumens 1080p Short Throw Home Entertainment Projector
The BenQ TH671ST earns a distinct spot because its short-throw lens and native 1080p resolution solve a practical problem: getting a large image without placing the projector far across the room. Its throw ratio is listed as 0.69–0.83, and the projector can produce screens up to 300 inches according to the supplied details. For a player who values responsive 1080p gaming over 4K detail, this makes more sense than a conventional-throw 4K model that cannot fit the room.
The 3000-lumen rating is close to the 3200-lumen figures for the TK700, TK710STi, and ViewSonic, but the TH671ST is not a 4K projector. That difference is easy to overlook when comparing brightness alone: viewers sitting close to a very large screen may prefer the extra resolution of the 4K alternatives. The listing calls out low input lag but does not provide a numerical figure, so buyers who need a documented response mode should favor the models with a stated latency value.
Unlike the TK710STi, it uses a lamp, with a stated 4000-hour normal life or 10,000 hours in Eco mode. There is no built-in Wi-Fi or wireless display feature, and its 5W speaker is basic. Those compromises leave it behind the 4K picks for image detail and long-term convenience, but its short-room fit is a genuine advantage rather than a consolation feature. I would select it for a smaller gaming room, not as the default choice for a dedicated 4K theater.
Pros:- Short-throw ratio helps create a large image from limited room depth.
- Native 1080p and 3000 lumens suit gaming and home entertainment.
- Supports image sizes up to 300 inches according to the supplied specifications.
- Vertical keystone adjustment and 1.2x zoom offer some setup flexibility.
Cons:- The listing gives no numerical input-lag figure or specific gaming mode.
- Native 1080p has less detail than the four 4K alternatives.
- Lamp life is finite, and wireless display features are not included.
Best for: Gamers with a short viewing room who want a large 1080p picture and a projector explicitly described as low-lag.
Not ideal for: Buyers who prioritize 4K detail, need a published numerical input-lag figure, or want wireless streaming and a long-life light source.
- Native resolution:1920 × 1080
- Brightness:3000 lumens
- Input lag:Described as low; numerical figure not supplied
- Throw ratio:0.69–0.83
- Contrast ratio:10,000:1
- Light-source life:4000 hours normal; 10,000 hours Eco
- Image size:30–300 inches
- Connectivity:HDMI × 2, USB Type A, USB Mini B, VGA, audio in/out
Our verdict“<p>I would choose the <strong>TH671ST when short throw matters more than 4K</strong>, but I would favor a model with a published lag figure for competitive play.</p>”
Optoma Photon Life PK32 – 4K UHD, 1100 Lumens, LED, Premium Auto-Setup Home Entertainment & Gaming Projector
The Optoma Photon Life PK32 is the outlier in this group: it puts portability, automatic setup, and a long-life LED source ahead of the brightness of the other models. Its key gaming detail is unusually useful because it lists 4.6ms at 1080p/240Hz and 16ms at 4K/60Hz. That makes the tradeoff visible: the faster response belongs to a 1080p high-refresh mode, while 4K at 60Hz has a different stated figure. For buyers choosing between fidelity and responsiveness, this is more informative than an unqualified low-lag claim.
At 1100 lumens, the PK32 is well behind the 3000- and 3200-lumen alternatives. I would reserve it for a darkened room or a setup where compact size and quick repositioning matter more than fighting ambient light. Its 4K resolution and stated 95% DCI-P3 color gamut provide a strong movie-focused case, while auto-focus, auto-keystone, and motorized zoom can reduce setup effort. The TK710STi is the better fit for a brighter room and short-throw placement; the PK32 counters with a listed 30,000-hour LED life and a portable form factor.
Its maximum image size is listed as 150 inches, below the 300-inch claims for the BenQ short-throw models and the ViewSonic. HDMI and USB-C are listed, but supplied information does not give extensive software or audio details, so I would not buy it assuming a particular streaming platform or speaker performance. This is a focused convenience pick, not the best choice for a bright multi-use room or the largest possible screen.
Pros:- Published lag figures distinguish 1080p/240Hz from 4K/60Hz operation.
- LED light source is listed with a 30,000-hour life.
- Auto-focus, auto-keystone, and motorized zoom simplify setup.
- 4K resolution and 95% DCI-P3 gamut target detailed, colorful viewing.
Cons:- 1100 lumens is much lower than the other projectors in this comparison.
- Maximum listed image size is 150 inches, smaller than several alternatives.
- The supplied details do not specify built-in streaming or speaker capability.
Best for: Buyers who move their projector, want automatic setup and a long-life LED source, and can control room lighting.
Not ideal for: Anyone planning bright-room viewing, a very large screen, or 4K gaming at the same listed latency as its 1080p/240Hz mode.
- Resolution:3840 × 2160 (4K UHD)
- Brightness:1100 lumens
- Input lag:4.6ms at 1080p/240Hz; 16ms at 4K/60Hz
- Display technology:DLP LED
- Light-source life:30,000 hours
- Maximum projection size:150 inches
- Throw distance:5.6–18 feet
- Connectivity:HDMI, USB-C
Our verdict“<p>I would pick the <strong>PK32 for portable, low-maintenance viewing</strong> in a controlled-light room, not for the brightest or biggest home theater setup.</p>”
How We Picked
I ranked these five around the promise of low input lag in a home theater projector, not resolution alone. A projector can display a detailed image yet still feel sluggish in a game, so I gave weight to stated response figures and the conditions attached to them. When a listing specifies 4.2ms at 1080p and 240Hz, I treat that as a mode-specific claim—not proof that every resolution and refresh-rate combination reaches the same figure.
I then compared the details that shape day-to-day use: native resolution, brightness, throw design, and light source. A short-throw model can solve a difficult room layout; a laser or LED source can reduce lamp-replacement concerns; and higher brightness can help with some ambient light. These advantages matter only when they match the room, screen size, and viewing habits.
Finally, I considered the tradeoffs and the clarity of the supplied specifications. I did not treat missing details as proof of a weakness, but I avoided making claims the product information does not support. The order favors models that make a strong, well-rounded case for responsive gaming and home viewing. Later picks still make sense for narrower needs, such as a short room, portable setup, or particular balance of resolution and upkeep.
| home theater projector with low input lag | Connectivity |
|---|---|
| BenQ TK710STi 4K HDR Short-Thr | Dual HDMI 2.0b, eARC, Android TV |
| ViewSonic PX701-4K UHD Project | HDMI, USB |
| BenQ TK700 4K HDR Home Enterta | HDMI, USB 2.0 Type A |
| BenQ TH671ST 3000 Lumens 1080p | HDMI × 2, USB Type A, USB Mini B, VGA, audio in/out |
| Optoma Photon Life PK32 | HDMI, USB-C |
Factors to Consider When Choosing Home Theater Projector With Low Input Lag
Low input lag is only one part of choosing a gaming projector. I would match the projector’s stated gaming mode to the device I actually use, then check that the lens, light output, and light source suit the room. The differences among these five picks are most useful when treated as decisions, not a race to the smallest latency claim.
Read the lag figure with its resolution and refresh rate
Input lag figures are mode-dependent. The TK710STi lists 4.2ms at 1080p/240Hz, while the PK32 lists 4.6ms at 1080p/240Hz and 16ms at 4K/60Hz. Those figures show why a buyer should check the exact mode rather than treating one number as universal. The PX701-4K lists 4.2ms and 240Hz but the supplied information does not tie the lag number to a particular resolution. The TK700 gives a 4.2ms claim without a mode condition, and the TH671ST is described as low-lag without a number. If a game runs at 4K/60Hz, a 1080p/240Hz specification alone does not tell you what response to expect at that game’s settings.
Choose resolution for your screen and viewing distance
4K is not automatically the right choice for every setup. The TK710STi, PX701-4K, TK700, and PK32 list 4K resolution, while the TH671ST is native 1080p. A large image or close seating can make added detail more noticeable, but a buyer with a modest screen and a strict short-room requirement may value the TH671ST’s placement advantage more. Also separate native resolution from a projector’s ability to accept a signal: use the listed native resolution when comparing actual image detail.
Match throw design to room depth
Measure before choosing the model. The TH671ST specifies a 0.69–0.83 throw ratio, and the TK710STi is described as short-throw, making both more appealing when the projector must sit near the screen. The other options may need a different distance; the TK700’s supplied throw information is limited, while the PX701-4K’s distance figures should be checked against the screen size you want. Keystone correction can help align an image, but it does not replace verifying the lens-to-screen distance and mounting position.
Use brightness as a room-fit clue, not a guarantee
Brightness ratings help narrow the field. The TK710STi, PX701-4K, and TK700 list 3200 lumens, and the TH671ST lists 3000 lumens. The PK32 lists 1100 lumens, so it is the clearest candidate for a room where lights can be dimmed rather than a bright space. Screen material, image size, picture mode, and ambient light all affect the result, so no lumen number alone guarantees a satisfying picture in daylight. If your room cannot be darkened, give more weight to the brighter-listed models and consider keeping the image size moderate.
Compare lamp, laser, and LED upkeep
Light-source type changes maintenance expectations. The TK710STi uses a laser rated at 20,000 hours, and the PK32 lists LED life of 30,000 hours. The TH671ST gives 4000 hours in normal mode and 10,000 in Eco, while the TK700 lists 4000 hours; the PX701-4K lists 6000 hours. Those stated lives help compare expected operating intervals, but use conditions and replacement options matter too. Buyers who watch or play for many hours may prefer the laser or LED choices; lamp models can still suit buyers who prioritize their overall room and image needs.
Plan audio and streaming separately
Do not assume low lag includes a full entertainment system. The TK710STi lists Android TV, eARC, and a 5W speaker, while the TH671ST also has a 5W speaker and no listed wireless display feature. The PX701-4K does not mention built-in speakers in the supplied details, and the PK32 information does not specify its speaker or streaming features. If you already own a receiver, soundbar, or streaming device, these omissions may not matter. If you want a minimal-cable setup, confirm the exact audio and streaming capabilities before choosing.
Check device support before buying for competitive play
Your console or PC must output the mode you want. Verify supported resolution, refresh rate, HDMI connections, and any relevant gaming settings for both the source and projector. A 240Hz projector mode is most useful when the connected device and game can send a compatible high-refresh signal. For console owners who mainly play at 4K/60Hz, the PK32’s separate 4K/60Hz latency figure is more relevant than its 1080p/240Hz figure. For PC players, the faster mode may matter more, provided the graphics hardware and connection support it.
Frequently Asked Questions
Which projector in this group has the lowest stated input lag?
The TK710STi, PX701-4K, and TK700 each list 4.2ms, but the supporting details differ. The TK710STi ties its figure to 1080p at 240Hz; the PX701-4K lists a 240Hz capability but does not specify the resolution for the lag figure in the supplied information; and the TK700 does not state a mode condition. The PK32 lists 4.6ms at 1080p/240Hz and 16ms at 4K/60Hz. I would compare the figure that matches your actual gaming output, not just the smallest number.
Is 4.2ms input lag enough for competitive gaming?
A stated 4.2ms mode is a strong specification for responsive play, but the complete setup matters. The projector, source device, game, connection, resolution, and refresh rate all need to support the mode being quoted. In this lineup, the TK710STi specifies 4.2ms at 1080p/240Hz, while the other 4.2ms claims have less mode detail in the supplied information. Check your console or PC output and the projector’s supported settings before treating the number as a guarantee for every game.
Should I choose 4K or the BenQ TH671ST’s 1080p short-throw design?
I would choose based on the room and screen before resolution alone. The TH671ST is native 1080p, but its 0.69–0.83 throw ratio can make it a better fit when there is little space between the projector and screen. The four 4K options offer more image detail, especially useful for large images or closer seating, but their placement requirements need checking. If your room demands short throw and your games suit 1080p, the TH671ST may be the more practical fit; if detail is the priority and placement works, choose a 4K model.
Which model is better for a room that cannot be fully darkened?
The TK710STi, PX701-4K, and TK700 list 3200 lumens, while the TH671ST lists 3000 lumens, giving them brighter specifications than the PK32’s 1100 lumens. I would begin with one of the higher-lumen models if room lights or ambient light are unavoidable, while remembering that image size and screen choice affect the result. The PK32’s portability and LED life are useful advantages, but its lower listed brightness makes it less suitable for a bright room.
Which projector needs the least light-source maintenance?
The PK32 lists a 30,000-hour LED life, and the TK710STi lists a 20,000-hour laser life, so those are the strongest choices here for reducing lamp-replacement concerns. The TH671ST lists 4000 hours in normal mode or 10,000 in Eco, the TK700 lists 4000 hours, and the PX701-4K lists 6000 hours. These figures are stated operating lives, not promises of identical performance throughout that period. I would balance upkeep against brightness, placement, and the gaming mode you need.
Conclusion
For one projector that covers 4K movies, responsive gaming, short-throw placement, and a laser source, I would choose the BenQ TK710STi. If a high-refresh gaming mode and a bright 4K lamp design matter more than built-in streaming or laser convenience, I would compare the ViewSonic PX701-4K closely. The BenQ TK700 suits buyers seeking 4K HDR for both games and films, with its mode details and lamp life checked against their expectations.
For a short room where 1080p is sufficient, the BenQ TH671ST has the most compelling placement advantage, though its lag figure is not numerical. For portable viewing and reduced light-source upkeep in a darkened room, the Optoma PK32 is the specialist pick; its lower brightness and different lag figures at 1080p and 4K are the tradeoffs. My final choice would follow the room first, then the exact resolution and refresh rate I use for games.
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