Beep's got a plasma that he's sung the praises of.
http://www.crutchfie...eatures_and_specs
252 Watts (Crutchfield measurments), 420 Watts (Samsung), 84 pounds with stand.
Roughly comparable 52" Samsung 52B530 LCD:
http://www.crutchfie...eatures_and_specs
191 Watts (Crutchfield), 250 Watts (Samsung), 64 pounds with stand.
Burn-in might be an issue too, depending on what you watch. I think newer sets are better, though.
Plasma seems to be a technology that's on its way out since companies have apparently perfected making very large LCDs now. It may be a good time to buy.
HTH a little.
Good luck!
Cheers,
Scott.