The biggest problem here is that, once again, the black level WILL rise and, once again, Panasonic says it is "normal" and won't be doing a thing about it!
While Panasonic reps might be saying that the rise in black level will be "more gradual" than what happened with the 2009 models, the fact remains that after 1500 hours or so, these 2010 plasmas will display the same sort of black levels as a regular CCFL LCD!
Is that the end of the world? No. Plenty of people are still watching CCFL backlit LCDs from 2008 and are perfectly happy with that level of black. But the point here is that you are buying one thing and then ending up with another. If the deep black level is one of your main reasons for buying a Panny plasma (and I truly believe that it is for a lot of people), then it just seems rotten to me that you are basically guaranteed to lose that aspect of the display's performance after a relatively short amount of time.
All of that said, if you are willing to accept that your black level will actually be closer to 0.025 rather than 0.005, the other aspects of these Panny plasma displays are still better than the performance you will get from any LCD.
When it comes to off-angle viewing, motion resolution, screen uniformity and the overall 3D effect with 3D content, there seems to be no question that these Panny plasmas will outperform ANY LCD option.
One final concern of mine is the lack of a second layer of glass over the plasma panel. I pretty much have one, and only one, complaint about my Pioneer KRP-600M Kuro, and that is the audible buzz. All plasmas buzz. And my Kuro doesn't really buzz any louder than any other plasma. But the buzz from my Kuro is more noticeable than with other plasmas because it has no second layer of glass and, as such, the buzz actually emanates out the front!
With almost all other plasmas, the buzz is really only audible out the back and top. But without a second layer of glass, the operational panel buzz comes right out the screen itself with my Kuro. I would suspect that these 2010 Panny plasmas might have the same audible buzz problem now that, they too, have no second layer of glass to block the sound!