But one size bigger than the biggest you think will fit. Get Direct TV STB with OTA HD and don't look back. I originally wanted a 58" Elite but got a good deal on a 64" and was worried about the size of the cabinet etc.. Bigger is better, we sit about 15ft away and now the thing seems too far away (too small). I said that around my wife once and she just about lost it. She thinks the 64" is plenty.

Watch HD for a while and everything else will look like crap regardless of the picture size.

Good luck!