i'm looking to build my own 16:9 screen. the characteristics of the room is that there is a lot of ambient light. i can only acheive perfect darkness only at late nights (obviously) but i would like to have the ability to view movies somewhat respectably on the projector in early evenings when the sun is just setting and its only slightly dark. should i be getting a high gain screen? 1.3? or a 1.0? or a low gain 0.8? also, what do you guyys think about DAZIAN material? example: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=48655&item=5756718863&rd=1 it is 1.3 gain.