Having decided on purchasing a Panasonic TH42PE50 I went to my local electrical store for one last look before ordering. Stood there watching the screen very impressed with PQ when it suddenly dawned on me I was watching the th37pe50. Now I am wondering, do I really need a 42" screen. I returned home and found I sit exactly 11ft away from the screen. Is there some sort of hard and fast rule on viewing distance = screen size? I know the if you are sitting to close to a large screen the picture actually looks worse. Any advice on this dilemma would be much appreciated, before I drive my wife mental. After all the different makes of TV we have looked at know I am unsure of the size.