I'm looking for opinions on which TV is better quality, as well as which is the better deal price-wise? I'll be using it for sports and movies primarily.
The 50" Panasonic. If you wanted to go with the U2 instead of the S2 I've seen it for over $100 less online. Watch Ben's Bargains, Tech Bargains or slick Deals for TV deals.
I made the mistake of buying a 42" first, it got small fast. I ended up buying a 50" and giving the 42" away.