2000+ hours and although I am not looking for it nearly as much, it seems the letterbox IR that sometimes appears (but inevitably goes away with the apparent voltage reset) has significantly improved. 3 or 4 firmware updates since then, that may have something to do with it. To echo 5x10's account, the grayscale hasn't cleared up and as Wizz has noted prior can manifest as DSE when the camera pans on darker earth tone backgrounds. Dirty backplanes, what can you do but hope for the best with M2. I still can't envision switching back to plasma or, heaven forbid, LCD.