i got an LG "Lifes Good" and love it. to be honest i forget if its LCD or plasma but the things you need to look out for are:

HD compatability, 1080i/p at *least* dont go for anything less. i forget what its up to now.

Wall mounts. if you plan on wall mounting it make sure you know it will fit where you want to mount it and also that the mount that works best will fit you tv and spot to mount. dont let them talk you into mounting it for you it will cost ya $$.

Input/Ouputs:
Make sure you get all the input and outputs you need. for HD, HDMI is the best quality, component is next. some come with VGA so you can hook up a computer to it.

LCD vs. plasma
One of them are better for light glares, fast motion like action films and sports, and also screen burns. i forget which one is better at which. ask the sale person at the store you go to. they will talk to you all day till you buy something.