The answer — one pick, priced
Get the
BenQ X3100i
no budget ceiling
The most-recommended gaming projector across 8 review sources — 4K XPR resolution, independently-validated 4.2ms input lag at 240Hz, and built-in Android TV, now $600 cheaper after a 2026 cut.
Fit ledger — need → measured evidence
■ The catch — co-equal billing, always
It's not the brightest or most colorful at its price. At the same ~$1,799 the XGIMI Horizon 20 Pro is a triple-laser with 4,100 lumens and wider color volume — the X3100i's edge is its independently-validated input lag, not its image. If peak brightness or Rec.2020 color matters more than lag pedigree, it loses.
Dealbreaker? Runner-up №1 — the XGIMI Horizon 20 Pro — fixes both for the same $1,799 ↓
■ Every product has a catch. Verdicts that hide it are how bad buys happen.
Runners-up — if your needs differ
Adjacent verdicts — same method
Traps — this verdict avoids
The 4ms is a 1080p number
The headline low input lag exists only at 1080p/240Hz. Switch to native 4K/60Hz and real-world lag jumps 12–20ms higher. Competitive players game at 1080p on these; 4K is for slower single-player titles.
'4K' is usually pixel-shift
Most DLP gaming projectors here use a 1080p or 1440p chip pixel-shifted (XPR/e-shift) to 4K — not native 3840×2160. Up close the difference from a native-4K TV is visible.
Lamp models cost you a bulb
Lamp-based projectors (ViewSonic PX749-4K, Optoma UHD38x) need a new bulb every 3,000–5,000 hours at ~$100–250. Laser engines run 20,000–30,000 hours bulb-free.
Provenance — 8 sources, dated
Winners are picked from the full research dossier at knowledgelib.io. Prices, stock and listings are re-verified monthly.