Seriously considering this set along with the 6300. Have seen the now in multiple store locations, and have been impressed every time. Was originally sold on a Panasonic ST60 plasma, but it would appear that I prefer the "pop" of LED. I absolutely loved the smooth, rich color of the ST60 but after reading an exhaustive list of posts and topics regarding the set, I decided that I don't have a "home theater room" for it to thrive in; I have a "family room" with potentially hostile conditions
With four kids, two dogs, and a tech-impaired wife, I don't have the time to pursue plasma excellence at my place; at least not at this point in my life. They are nice though; In a different environment under different circumstances, I would have probably already bought the ST. As it stands, I'll save my OCD for audio
Now it's down to figuring out the size (55 vs. 60) and the model (6400 vs. 6300). Not sure I see that much of a difference between the two in the classic Best Buy/Sams/HHGreg environment, but since that's about the worst place to evaluate a set, I may have to just roll the dice and pick one. The thing that stood out to me on both sets was the "clarity" of the picture - a lot of LED sets seems washed to me - these did not. I don't need the 3D, but the $100 price difference (Amazon) is almost negligible and it would appear that the 6400 has better blacks (not sure where I saw that...).
Will be interesting to see more reviews come in, but at this point one of them might be mine....