I just moved to an apartment where I can't paint the walls or ceiling so I'm stuck with white walls. I have a Carada Criterion Brilliant White 100" screen and a Panasonic PTAE4000 projector. There in no ambient light from windows or anything like that but the white walls are wreaking havoc on my black levels. My question is: Do I replace the screen with the high contrast grey or go with the classic white? The other issue is that the screen is mounted about 3" away from the wall so I'm afraid that the classic white will let too much light through behind the screen and I'll get blurring...