Most people don’t have a wall big enough to get the most out of 4K. It’s not the giant leap in resolution we had going from DVD to Blu Ray.
I suspected as much. I mean 120 inches is still pretty large and the way the room is set up it’s nice and cozy so it looks bigger to your eye, but still at 1080p it’s hard to imagine it really looking much better resolution wise. It’s very sharp with no pixels visible and plenty of fine detail.
I could envision the colors and contrast being slightly better though. Not that they aren’t already good enough but I could see them improving more than detail or sharpness so that would probably be the main benefit of getting a 4k projector but I don’t think slightly better contrast and colors is worth 2000 when they are already quite good as long as it’s dark. (And it’s in a windowless room that can get pitch black even in the daytime so that’s not a big deal)