Hello, Should I replacing my 100" DIY screen with a smaller 92" Da-Lite Hight Contrast Gray or better? Currently I'm projecting a 100" image onto a DIY screen. I purchased the Matt White (very bright) screen material from Ebay and stretched it over 1x4's. It has served me well but the poor black levels are beginning to bother me. The projector is a Sanyo Z2 calibrated with Avia. I can already see a big difference in black levels when I decrease the size of the image from the Z2. Will I see an even greater change in black levels and contrast if I change to a High Contrast Gray or should I spend my money on a better projector(say the Sony HS20)? Any input is greatly appreciated.