The answer — one pick, priced
Get the
ViewSonic PX749‑4K
no budget ceiling
The brightest 4K under $2K and Designed-for-Xbox certified — 4,000 ANSI lumens cut through a lit living room, with 4.2ms/240Hz input lag at the lowest 4K price on the list.
Fit ledger — need → measured evidence
■ The catch — co-equal billing, always
It's a lamp, not a laser. The bulb needs replacing every ~3,000–5,000 hours at ~$100–250, and there's no built-in smart OS — you'll add a streaming stick. Laser rivals run 20,000–30,000 hours bulb-free but cost more up front.
Dealbreaker? Runner-up №2 — the BenQ X3100i — is bulb-free 4LED with Android TV built in ↓
■ 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.