Sorry to hijack but my question is very similar. Same projector (Benq w1070) being bought in a week or two, and will be rolling a painted screen onto a sanded and very nice drywall surface.
This projector's pretty bright and the screen with be in the 110"-120" range, with a throw just over 10 feet. Fairly light controlled basement but there will be some daytime viewing or "social" viewing during football games or other activities where people will want to move around. Ambient light close to the screen can still be controlled mostly.
I already have a quart of SW Unique Gray (8.5) but am thinking of maxxmudd-LL instead. Would it be worth it, with such a bright projector and a good amount of light control?