Some comments after having the Tv calibrated, and using it for close to 3 months.
The picture quality is similar to my old 80-632. Overall very good, though of course nothing like my old 60" Pioneer Kuro. That being said, I really dont miss the quality, with the significant size increase. Sports, and movies are amazing, as is most everything in high def. Non hd is not very good... its watchable, but overall pretty poor.
Despite the several thousand dollar price difference over the 80", this is one upgrade that I have zero regrets on. My room is large, and on the main floor, with several large windows. A projector would not be the option - and while I could finish part of the basement for a dedicated room, I now dont have any interest because of this tv.
For any of you sitting on the fence.... go for it, you wont regret it despite the price.