Hello! I am thinking of buying a projector for my new basement home theater. I'd be using a 92" or 106" screen. Based on the reviews, I like the Infocus 4805, which is 480p. It seems to be priced nicely, perhaps because of the fading technology. The Infocus 5000 seems to be 720p and is about 300 bucks more. So, 1. In general, is 720p a lot better than 480p and worth spending the extra few hundred dollars? 2. How do the 4805 and the 5000 models compare? Thanks!