I'm setting up my first HT system, and I have a quick question regarding InFocus projectors. I will be throwing from about 12 feet,from the ceiling, and having the primary seating at about the same distance. I have used all the calculators, and I'm struggling to find a real difference between the InFocus X1 and the Screenplay 4800, except the $300 extra and native XGA on the 4800. There are some other minor differences as well, all of which I don't quite understand yet... Does anyone have an opinion on which of these 2 projectors I should consider? If there's a big difference between the 2, I would be happy to spend the extra $300. Any thoughts are appreciated. Thanks!