Summary: Bought this TV in June 2011 and it just died in July 2012 - 12 month warranty, 13 month life span. The TV wouldn't turn on and the power light was blinking seven times. I did an internet search and found that this is a pretty common problem, one that Panasonic has to be aware of judging by all the posts I read by upset Panasonic customers whose $1000 TVs quite working just a few months after warranty (google 'panasonic 7 blinks' and you'll see what I mean).
Summary: Don't buy Panasonic. This TV, like many Panasonic Plasmas, died after only a couple of years. Panasonic is aware of the issue but won't fix it. They will, however, refer you to a repairman who will charge you $500 to fix Panasonic's product. Horrible.
Summary: First the sound - sounds like a cheap transistor radio inside a glass case, it is so muffled, it is mostly unintelligible. The sound is only tolerable on my stereo The set is less than 4 months old. But I know what my favorite channels are - THEIR LOGOS ARE BURNT INTO THE SCREEN!!! And Panasonic - the major run-around. Don't buy the story that burn in is no longer an issue.