Which screen size gives the best picture quality when watching regular (analogue, freeview or SKY) trasmissions? I've seen the Sagem 50" axium performing flawlessly with an HD feed but Comet don't seem too interested in showing a regular feed on it. Toshiba 46" DLP owners have reported a good picture from regular feeds. Does enlarging a regular feed to 50" show up too many artifacts (grain etc.) for occasional viewing?