The only real knock on RPTVs that I think is very valid is that some models do exhibit a bit of lightening of the picture near the center of the screen. Apparently most folks don't even notice it but I'm unfortunate in that I do, otherwise I'd have picked up a 70+" RPTV and would have saved some coin over the 50" plasma. Picture quality of the latest generation(s) however is pretty damn good in general.