I guess the biggest determining factor is price. What is the budget for this tv?
You can get much more "bang for the buck" if you get a RPTC, such as DLP, lcos, lcd, etc... You will get a better picture (deeper blacks, richer colors) and a larger one for the same price.
Also, make sure that you a tv with at least 1 hdmi input for future use. If you can wait a fewe months, the newer TRUE 1080p sets will be coming out. Right now, even though many hdtv's say they are 1080p, they can only upscale to that resolution, they can not receieve 1080p source material. So basically, those new fangled HD-DVD's and BLU-RAY that everyone is talking about, will not be able to send the 1080p signal to your tv.
Hope I did not confuse you TOO much!