Before buying a new tv pls decide on a MAX budget (just for the tv). Pls don't include cables, amps, bluray players, etc...
I can tell you the retailers aren't making lots of margin on new TV's. With your budget pls go to 2001 audio video and ask for last years top models. I'd go Samsung or pany for plasma. Sharp or Samsung for LED. If you want 3D go LG for passive glasses.
2001 can offer the best deals, skip ff/bestbuy.
Don't spend anymore than your max budget as prices will drop 30% a year.
If anybody needs help with a certain tv send me a PM.