Here is my set up. I've got a LCD, NEC LT156 and I project typicaly in 4:3 at about a 1000 lumens. I plan on getting a permwall 68x92. I'd like to stick with this size so I could scale down to 16:9 movie and use some type of masking. The ambient light control is fairly well, it is a finished basement with glass block and heavy shades, however we normally watch movies at night where ambient light is not a concern. We sit about 20-25 feet away from the screen. My question is should I go with a Dalite hich contrast (.8 gain) or the new (1.1 gain) Cinema Vision High contrast. Any help would be appreciated. Thanks!!!