Hi all, This is my 1st post! Glad to have found this forum, the info is quite extensive. I'm looking to pick up either the Pioneer Elite 720 or 620 in the next week or so. With the on-going 18 months of no interest, this is just too good of a deal to pass up. Anyways, the distance between my 2 walls (where the TV and couch are) is 15 feet. I recall that there is a formula to calculate how large a TV to put in a certain size room. Would the 720 be too large for my room? I figure the screen will be about 3 feet from the wall, and my head will be 1 foot from the opposing wall. That gives 11 feet between my eyes and the screen. Thanks!