I know alot of Sammy lovers will hate me for this, but I feel that Samsung's TV's are extremely overpriced for their lackluster display. After viewing and testing various models with the 360, the Samsung unit's were at the bottom of my list next to the no-name brands. I also didn't like the fact that Samsung used the grey to grey test to achieve their response times. An TV with nothing to hide would have used the black to white test. Sammy fans, don't hate me. Just a personal opinion.
All that being said, I'm still a newbie to the whole HDTV scene. I just had my cherry popped last weekend when I purchased my Panasonic TC-32LX50 32" widescreen LCD. The picture is amazing, far superior to any projection TV's, especially for gaming. The vieing angle is huge, the contrast is great for an LCD and the price was just right.

Whatever you do, make sure to test your 360 on ANY models you are considering. You'll save yourself from buyers remorse later on down the road.