Hi guys, I posted this in the basics forum but was told this section would be better. I just bought a Optoma Hd65 Projector. I installed it on my ceiling and would like to project on a 120" 16:9 screen. The room is Dark with no windows. What would be the best type of screen? I'm willing to buy the material and making my own fixed frame if needed. Just not sure what material and gain ratio would produce the best quality for watching Blu-Ray movies?