The 5050UB and LS800 now solve two different room problems rather than competing head-on. The 5050UB is a standard-throw lamp projector that needs real distance from the screen, but its powered lens and generous shift range make it the flexible choice for a dedicated theater room, and its UB filter still holds arguably the better contrast for dark scenes. The LS800 is ultra short throw — it sits right against the wall with a laser light source that never needs a lamp swap — but it’s a brand-new listing without the 5050UB’s years of proven reviews. Room depth and the best dark-room contrast: 5050UB. A wall-hugging setup with laser convenience: LS800.