http://www.avsforum.com/
like any other forum, you will see many differing opinions. but you'll get good info there.
some things to remember:
how big is your room
how much do you want to spend
what features are you looking for
and after looking at a lot of tvs, what looks good to YOU with all of the above things considered.
if i had the money i would buy the new 60" Sony SXRD tv. but i don't have an extra $5K laying around.