As a new, very proud and extremely impressed owner of a TH37PX80, i thought i'd drop a couple of lines, because i feel you all need yet another mini review of this set!

Before i start, i got this set for around £560 delivered from Amazon, which frankly is a steal, everyone coming over my new place is always shocked that this set cost me so little, i think i'll convert some people over to plasma
I just bought a new place and i've been busy with furnishing it and decorating it (almost all done and in a record time of a week!) and finally decided after months and months of research, testing, head scratching, to settle for this set. I was initially looking to get a 42PZ80, but it would have looked a bit naff in my livingroom, just too big, so i was a bit worried that i wouldn't be happy with the fact that the PX80 isn't a Full HD model. The PZ80 just looks so sharp! But in the end i can safely say that given all the things that are so good about this set, the lower res just doesn't bother me at all, the set is still very sharp and gives such amazing pictures!
First thing that got my attention was the lack of options. It makes the TV feel like a slightly more advanced "old school" CRT, with very simple options. In the end i thought, do i need any more options than this, REALLY? and the answer is simple, not really, now i can just enjoy what i'm watching and not stress about white balance, gamma and all those things.
I don't have an aerial so can't comment on Freeview, Sky HD is on order. So i just plugged in my Macbook via HDMI and i found that setting the res to 1280x720 is the best for me, fits the screen perfectly without overscan or black bars anywhere.
Blacks and contrast was my main worry. And yes, the blacks are definitely not "bezel black" except under favourable lighting conditions (low to medium light, it is most definitely not "bezel black" in a totally dark room, but close enough), but they are still SO much better than any other TV (mainly LCD) i've seen that i don't know how i could complain really, at this price. On top of that, my other worry that the set wouldn't be as bright as LCDs, was instantly killed: the set can definitely go as bright as an LCD at maximum settings such as Dynamic, not that i'd ever leave it like that, it looks ridiculous. Leaving Contrast at 50 (there's no number but i call it 50 to say "the middle") or one or two taps above is more than bright enough in Cinema mode, and looks very natural.
Colours-wise, i can only say that the set produces some really vivid colours, more "natural" than LCD. As a new-to-plasma guy, after having owner a few LCDs, i always thought that "plasma people" always talked about plasma being more "natural" to hide the fact that it's just more dull than LCD, and boy was i wrong! Now i TOTALLY understand what the "plasma people" talk about. Not being "in your face" does not mean being dull, it means being as close to reality as it can get, being vivid when it needs to be, being subtle when it needs to be, as opposed to being an explosion of very bright, unnatural and inaccurate colours like on so many LCDs.
Of course i can never tell how exactly "accurate" the colours are, like some of the professional reviews, but honestly i don't see the point. Green is a vivid green, blue is blue, red is red. All the colours are so much better (i.e. more realistic) than on any LCD i've seen that i don't see how anyone can complain, at this price especially!
Motion... I could go into detail like so many other people do, but in a nutshell, things move like you'd expect them to and without all the silly issues that i've seen on LCD for years. There is no smudging, blurring, artifacts, hieroglyphs, STDs... things just move from here to there and "don't look weird doing it", unlike on so many LCDs, that's the only way to explain it really.
What amazed me the most is that i put through some TV shows i downloaded. Generally low-ish quality which on my old LCDs looked atrocious, even though they were small sets. On the Panny they looked so much better i could not believe my eyes and for a moment made me wonder if i really needed Sky HD which i'm waiting for! If downloaded episodes looked like that (soft but not a pixelly, compressed, youtube-looking mess) then DVDs would look scarily close to HD, and Bluray will melt my eyes, when i eventually take the plunge, probably at the boxing day sales!
Lots of people have been complaining about sound and of course it's not exactly spine tingling, it gets the job done for casual viewing. With a TV like this, everyone should invest in a surround sound system for movies, which to me is almost more important than the visual aspect, nothing can beat watching a movie with sound coming from all directions.
As you might have noticed by now, i'm a very happy camper. I never thought i'd be so happy with this, or any, TV. If you're still undecided and don't need to go up to 42", then please do yourself a favour and buy this TV!