OP, keep in mind that:
-Brand doesn't matter. At all.
-Go for the best deals
-1080p or more, for resolution
-IMO, you want at least 2 HDMI ports.
-At least 1 USB port
-At least 1 VGA port
-At least 1 set of (I forgot the name of them :P) the kind of ports that are used for Gamecubes/Wii/XBox original/etc
-At least 1 audio in, and 1 audio out
-The larger it is, the larger the resolution better be for quality.
-Weight is important!
-MAKE SURE THE SPEAKERS ARE AT LEAST DECENT!! >U
-Make sure you have HD cable as well. Even if you don't, the TV's still worth it eventually. :)