Just an observation at the local BB - I went in to measure the mounting holes on the new 5060(1), and went over to check out the 4360(1). 4 days after they got it, it was burned in severly with the thin black and white vertical bars on the ESPN HD channel when the programming is 4:3. Also, the ESPN bug is burned in the lower right corner. I go in today, and not only is all that obviously still there, but now the Comcast "INHD" bug is also burned in, over top of the ESPN bug. Of course the set is on OOTB settings, but you would think that it might be a little more resilient. I really don't think a CRT would have done that - It makes me a little concerned about the new Pioneers, even though I know that is a little more extreme than I would probably go, but, again, I don't think the Panasonic is this fragile (I have a 37") and have watched alot of stuff like this, and my contrast is usually at 20 out of 30.
Thought it may be relevant.