White or grey screen for my Benq W1720 (110", white walls)?
I am pretty much set on buying a Benq W1720 as my first projector (contrast: 10,000:1, brightness: 2000 ANSI lumens). I live in Europe and this model gets lots of praise here.
What I can't decide on is what colour screen I should buy. It's going to be a 105-110" pull-down screen with black borders, installed in my light-controlled living room (window blinds, dimmable lighting in the room, dimmable ambient lighting behind the screen). The wall behind the screen is dark grey, however, the rest of the walls are white (right wall close to the screen, left wall far from the screen), the floor is hardwood beech and I am not willing to paint the living room in a dark colour. The projector is going to be positioned 350cm (~11'6") from the screen.
I have read numerous threads on this topic but I still can't decide. On the one hand, I think I should get a grey screen because of the white walls, on the other hand, I'm worried the projector won't have enough brightness in eco mode, or that a white screen would be better for 4k HDR.