hey, right now we have a runco vx1000c projector and 100 inch screen, the seating is about 12 to 13 feet from the screen. What kind of difference in picture quality would there be in upgrading from this to a projector that supports 1080i or p in terms of hd quality with dvd, satellite, etc. Would it be worth it also is it possible at all to internally upgrade a projector or would it have to be completely replaced.