I have had the Panasonic 50pz77 for almost a month now and notice no issues with burn in. I think for the price that it's a great bargain compared to the Pioneer plasmas. The Pioneers may be slightly better but i didn't think the difference in price was worth it.

2xM80 VP180 2xQS8 2xM3 HSU STF3 LG 60PS11 Denon 3808 ATI 1506 LCR 2xATI 1502 Oppo BDP-83