I've actually done a lot of research on this subject. If you aren't looking for a bargain, everything I've seen says go Samsung. There are other brands as well, Sharp and Sony get pretty decent marks. A lot of it depends on your budget as well as what sources you are watching. Blue Ray, Xbox360 and PS3 and now some OD stuff are offering 1080p. Most networks are still, and probably going to stay that way for a while, 1080i or 720p. So, what are you using it for. You could always save some money by going 720p. That's what I did for my video game TV actually. I just didn't have the cash to throw at a TV I use just for video games.
Anyways, if this is going to be your main TV. I'd spend a few more bucks on the Samsung. In the end, I can't imagine you'd be dissatisfied with it.