While initially skeptical about performance of a UST vs. standard OLED television, I have been blown away by the quality, clarity and brightness of the LG Cinebeam HU915QB. It is definitely up there on the price point but the unit does not disappoint with any category except for sound quality.
When I ordered the UST, I also submitted an order for a screen, but the screen would not be delivered for several days after the projector. Instead of waiting, I fired up the new toy and used my plaster wall with a robins egg blue paint as my screen. The image from the projector was fantastic with clarity across a space that was well beyond 120". The color of the wall seemed irrelevant to the colors being blasted across the plaster and the only flaws I saw were with my wall and how apparently the surface was uneven near the top. When the screen did arrive, I had the initial pain of centering the UST to the screen and am about 95% of the way there but will do no better until eventually getting a cabinet.
One thing that stands out from speaking with the projectorscreen.com customer support was the aspect of contrast with UST's. This is where I feel the HU915QB stands out as the blacks projected seem flawless. When used in conjunction with an ALR screen, I can see no difference in contrast, brightness, clarity or quality between this unit an an OLED television.
The only issue I have with the unit is the quality of the onboard sound. For such an expensive UST, I would have hoped LG would have opted for a more robust built-in sound bar, but no such luck. In my space, it does fine; however, I am just waiting until I can finish fleshing out the entertainment center with a a proper sounds system to remove the need for using the installed sound bar.