Epson - EpiqVision Ultra LS650 Smart Streaming Laser Projector

The LS650 is a solid projector and will look as good as it can look in such a setup. I think you've already gotten the feedback you need on how a white wall performs and the potential issues of it actually not being as flat as you believe it to be. But, the lack of a ALR screen is possibly enough of an issue to make you very unhappy. Great links in this thread, but the LS650 is a solid performing projector overall.

You'll get more light out of it, but the Sony is still no doubt a pretty capable unit. 60000:1 contrast and SXRD (LCoS) tech should translate to a fantastic picture with great black level. The 1000 lumen capacity somewhat lets it down but in a darkened room perhaps not so much. Based on the numbers the fan is also silent. Epson are known for having vacuum cleaner like fans. My own UST Epson is unbearable on 100%, but thankfully quite pleasant at 70% power. Even then it's a lot louder than the 22 db your Sony claims. There's frankly a real possibility you'll be disappointed. And returning the item may be legally fine but it would be a hassle to say the least. Going from a liquid crystal on silicon projector to triple transmissive LCD is going backwards insofar as projector technology is concerned. So, maybe you want to consider looking into a newer unit with that technology instead, with more light output and 4K. JVC's D-ILA is one option, and Sony SXRD obviously. They're a bit pricier but the entry level JVC isn't truly brutal. The LS12000 is a fine projector, but light levels aside I don't think you'd necessarily be entirely pleased by the drawbacks you might experience. At a mere (in this context) 110 inch screen, you might also be a candidate for an ultra short throw, and an ALR screen. For instance the new Nexigo Aurora Pro MK II and a new Fresnel or lamellar ambient light rejecting screen. The ALR screen for UST projectors is insanely good at rejecting ambient light, and the projectors are getting good. The PX3-Pro being another (top notch) option. You could even go with the Aurora Pro without a MK and pay $2000 usd for the projector, the 110 inch screen should be easily under a thousand. If there's space on the wall, a 120 too. A 132 ALR from Nothing Projector is just a little north of a grand (132 being the largest screen out there that is seamless). Going beyond 132 in size would be doubtful with an USD.

LS650 for brightness. 120" but you should also plan to spend about the same on an alr screen.

Yep on a high end Epson 4K HDR LCD projector at 120 inches Looks so damn good.