I'm about to purchase a CRT projector and I would like to inquire about the best screen gain. I understand that the different gains will reflect different amounts of light and may also affect the viewing angle. My question is: Are there any differences other than this? Does the amount of screen gain affect the accuracy of the color data or black levels? What would be the best screen gain to get. My room will be completely light controlled with a Barco 1208 on a 52" x 92" screen.