The Xgimi Horizon S Max ($1,899.99) offers all the right features for a 4K (3,840-by-2,160-pixel) room-to-room portable projector, including a higher-than-typical maximum rated brightness of 3,100 ISO lumens, Dolby Vision (the most sophisticated current version of HDR), and even IMAX Enhanced support. However, our tests show it handles streaming SDR far better than HDR movies on disc, and overall image brightness is much higher for SDR than HDR. If you have a library of HDR discs on hand, or want to watch HDR material in a room with lights on, you'll likely be better off with the Editors' Choice-winning Hisense C1—or potentially the Hisense C2, which we'll be reviewing shortly. But the Horizon S Max is well worth considering if you primarily stream your movies and don't mind turning down the lights for HDR.

As with all 4K room-to-room portables today, the Horizon S Max is built around a solid-state light source paired with a DLP chip, or more precisely, a 1,920-by-1,080-pixel chip that uses TI fast-switch pixel shifting to deliver 3,840 by 2,160 pixels to the screen.

The interesting variation in this case is the solid-state light source, Xgimi's Dual Light 2.0. The light source, which has a fairly typical rated life of 20,000 hours, qualifies as "dual" in two ways. First, it uses both lasers and LEDs. And second, you can set it to use lasers only or use both lasers and LEDs together. The three lasers by themselves provide a basic red, green, and blue light source, with both the advantages and disadvantages triple-laser designs are known for. The key advantage is a wide color gamut (range of colors), rated at 110% of BT.2020, the standard for 4K UHD TVs. The key disadvantages are laser speckle and the tendency to show fringe colors around white areas, including text in movie credits.