I have just purchased a Sanyo PLV70 and was now am looking into purchasing a screen for it. I have heard a lot of good things about Stewart Screens, but so far can't tell the difference between the GrayHawk or the FireHawk. Which one would work better for my projector, given it will be a fixed mounted 110" diagonal HDTV screen. It will be in a room that is primarily used with a DVD player and occationally may be used with an Xbox and Directv. Any suggestions?