BenQ X500i vs Optoma GT3900UHD Short Throw Projector

Both are 4K DLP short-throw projectors with 30,000-hour light sources, so the split comes down to brightness versus color and gaming tuning. The Optoma GT3900UHD is the brighter unit at 4,000 lumens, which matters in a room with some light, and its 0.49:1 lens throws a bigger image from closer. The BenQ X500i runs 2,200 lumens but adds 4LED color at 84% DCI-P3, vertical lens shift, a 1.2x zoom and Android TV with Google Assistant. Pick the BenQ for a dark, color-critical gaming room; pick the Optoma for a brighter multi-use room or golf sim.

• Choose the BenQ X500i if you watch and game in a room you can darken and want richer color, a zoom and lens shift for easier placement, and built-in streaming apps.
• Choose the Optoma GT3900UHD if the room has ambient light, you want the largest image from the shortest distance, or you need a dedicated golf sim mode.