Yeah, decide how much you want to spend, and how big you want it to be. Then the available choices will be obvious. I think projection TVs are a good choice, but keep in mind that they need to be calibrated more often than direct view televisions to keep the focus and convergence at it\'s best. You can learn how to do this yourself.
Do you watch more widescreen content, or 4:3 content? If you care more about the quality of your 4:3 content, then you might want to get a 4:3 projection television. I think those can be had cheaper than, and you can still get a great letterboxed widescreen image out of some of them.