I've been looking at the Panasonic plasma TV's. Have put off the purchase because of falling prices but am ready to make the move now. Was all set to buy a 50 inch unit. The 720 was great but the new 1080 doesn't cost much more. Now they have a 58" in 720 at about the same price of a 50" in 1080. Should I go with a large screen or higher resolution? comments are appreciated.