I just got a SVGA LCD projector. It's native resolution is 800 x 600 although it can accept higher resolution signals like 1024 x 768 & 1152 x 864. It can also accept 480p, 720p, 1035i and 1080i signals. I use it to watch DVD (480p) on an 80 inch screen and it looks fine. Given that the native resolution of the projector is 800 x 600, am I right in thinking that even if I double or quadruple the input signals (to 720p or higher), the output resolution is still 800 x 600 and so it would not look better? Would it serve any useful purpose for me to get a line doubler / scaler like QuadScan Elite? Grateful for any advice.