Mine just arrived. I was really worried about the blotches, but although it has the shades on the lower line due to the LED, there are no blotches, colour hues or anything. It is charging right now, but I think it is a keeper
My K4NT seems so dark now.....
I did not need to register it, it was all done for me, the books I had sent to it are on it and I have full access to my local amazon shop and can buy directly there without having to go through the browser.
I will play more with it later and then will think about buying the official cover or not.