I'v been looking at these two models for over a week now and will have to flip a coin i think!
I watch alot of movies in the evening and here in Hong Kong we don't get digital or HD tv so i'm leanning more towards the panny i think.
I'm not sure which is more pricey in the UK but here there is only a few hundred pounds in it, Pio being the cheaper.
Pros/Cons
Pios i'v looked at all have noise @ 1 to 2 feet from screen although i'm sure you can work it out through some calibration(and who sits at 2 foot viewing dist?).
Colors sharp and bright and gave a wonderfull image on the demo disc in the store.
Panny in one word, BLACKS! colors are also very nice on the panny but not as bright as the pio.
There are a few worrying posts about black lines in the middle of the screen and some kind of contrast issue with black lvls, although there are equel numbers of people who don't see them.
Bottom line, there both good tv's and the only diffrence i can see is viewing enviroment. Panny looks better in dark lit rooms while the pio did better in brighter lit rooms.
Will.