Well, I finally had to return my 60LM7200. I liked most everything about this set. The features were great, loved the design. Was GREAT for gaming. The PQ was pretty good except for weak blacks (Expected on an IPS display) and one other flaw which resulted in the return: terrible screen uniformity. Horrible banding and DSE (dirty screen effect) combined with the fact that the right side of the screen was slightly darker than the left.
This set had some of the worst banding/DSE I've ever seen. Every panning shot of blue sky, desert, or snow was ruined by light or dark vertical or horizontal bands. I was even able to see it in closeups of faces, etc. As long as the camera was stationary everything was fine but any kind of movement showed the issue, provided the background was light enough. If all you ever watched was live-action, it wouldn't be so bad, but I also watch a lot of cartoons and anime. Flat, brightly colored backgrounds and characters combined with a lot of panning (especially in anime) was just painful to watch. This is where one side being brighter than the other was painfully obvious as well. Furthermore, the top and bottom of the screen have "shadows" extending 1-2" into the panel.
I hoped I had just gotten a bad one, so I took my gray slides and some test material to Best Buy to check out their floor model of the 7200. Not only was it just as bad, but the darkest and lightest bands were in the exact same places on the panel. I could only assume that exchanging for the same set would have a high probability of being pointless, so I ended up exchanging for a Sony 60EX645, whose floor model at least had reasonable banding and uniformity (few edge-lits are completely free from this issue). I've had it a few days and am working on calibration. It's too early to say if it will be any better overall. Buying a TV over the past few months has been the most unpleasant purchasing experience I've ever had because every single one I've tried has had some overt, visible or audible defect.. Buying a car and my house was far less annoying.