go to avsforum.com, and read up on all the different options. There are just too many factors, 1080p vs 720p, price, built in tuner, inputs, etc. It really depends what you will be using it for. I also would suggest going to look at a tv specialty store, not bb or cc as they generally don't set them up well ( I have been to a cc where they had a big standout samsung dlp display where everyones face was red because they didn't adjust the levels correctly).
I am in the same market, I am probably going to buy a Westinghouse 42w2 lcd. Reasons, it is 1080p, people have purchased it for around $1550, and has vga inputs for the XBOX 360 (when it gets the 1080p update). Drawbacks, it doesn't have a built in tuner so I will have to use a cable box, which I would use anyways.
I just don't think it is worth spending and extreme amount on an hdtv these days, prices are dropping so fast and technology is changing so rapidly. First and second gen 1080p sets are just coming out, whereas 720p was the top of the line a year or two ago. And every set has its drawbacks, little quirks to work out with the new tech. I think it is better to buy a reasonably priced hdtv now, and buy a bigger tv in a few years when prices and technology stabilize.