I am about to purchase a Mitsubishi XD300U DLP projector that has one native 4:3 chip. Should I buy a 4:3 screen or a 16:9 widescreen screen. All my DVD movies are 16:9 widescreen so with the projector playing these widescreen movies, I assume there will be black bands (letterbox) at top and bottom, or part of the 4:3 chip won't get used? If I get a 4:3 screen will that mean I have lots of extra waist at top and bottom. Your advice desperately needed here as I don't want to spend £450 on the wrong Draper screen with the incorect aspect ratio.