It would appear that the latest generation of builds, namely the October builds, may have greatly reduced the issues with panel uniformity. I have yet to see one to check. But up until then, the issues still remained but not on all panels. I will say that i have no interest in a panel lottery, which is what we have with these panels. The newer panels have introduced another issue, namely a thick yellow vertical strip near the middle of the panel or slightly to the right as you are looking at the screen. IT was even visible on the Panasonic OLED with the LG curved screen and enhanced Panasonic electronics that was rolled out at IFA. The intensity of the yellow stripe also varies from panel to panel. many claim not to see it in "real" content. However, my experience is that you don't see it until you do. Once you do, you see it all the time. It frankly shouldn't be there at all on a flagship set. Personally, I am waiting for a year to see how all this shakes out.