Sony 57HW40 (something like that) is a real good looker out of the box for the price, mits 55819 or drool 55908 offers a better picture and more vibrant colors/greyscale but requires more tweaking.
Toshiba convert 480p to 540p, losing resolution and adding artifacts. try to stay away from those.
I have a fully tweaked 65819 and it is simply gorgeous.