Not to bring this thread back from the dead or anything, but I just got my C6800 in on Monday, and I can't be happier.
2 small annoyances though:
1) When playing Blu Ray movies, there seems to be a slight hiccup every once in awhile, almost like input lag I'm not sure if its the tv, my blu ray player, or the fact that it is running 24p. Any input? It's hard to determine, but I may be able to get a video of it
2) I'm almost sure this one is input lag - My friend brought his xbox 360 over, and we were playing halo reach, and we both noticed the controls to be different; slower basically. We both bumped up the look sensitivity, but its still somewhat there. When I hit the info button, I see that the game is running at 60hz. Is that why I'm seeing such lag? I'm not use to this because my HDTV back home is a big CRT, so this is my first flat panel tv.
Now I just need to play with the tv more (or read the manual), to figure out what all this thing can do. Guess it's also time for me to look into calibrating it too. So far though, I love this tv. Wish there were more reviews on it though