NFS isn't the only game that lags, it's just the most noticeable because car controls are often very tight. Also I definitely plan on getting a new tv, because the CS570 I have is in my apartment at school and I am home now for Thanksgiving. After playing on my family's 3-4 year old 42 inch LG LCD, I can tell that my set is definitely much laggier. And this is with the older tv's game mode off. Well I guess I have my work cut out for me in this search.
Also, I am not sure about how refresh rate works, but will 60Hz be a noticeable difference from 120? I don't like jarred/stuttery images in panning shots or moving text, but I don't know if it depends on the console or source or whatever too. Thanks again guys.
Oh and Tom, do you know how the picture is on that LG you linked? I had an LED LCD a year ago and my god, I had to get rid of it. The clouding on this Samsung was the worst thing I had ever seen and I could not watch anything in a dark room if it had any black images in the picture at all.