OK - so I've got the PW. I haven't had much time to look at it. I can see what's meant by uneven lighting.
Not so sure about these splotches, clouds etc.. I may not be sensitive enough to them. I took a photo and the result looked quite different from what I'm seeing with my eyes, so maybe the camera is catching something that I'm not seeing.
Anyway - I haven't had any reading time yet, and I think I will need to do some of that before I understand if something is wrong or not. At the same time I have to be careful not to invent problems that aren't really problems for me.
Just to be clear - if I want the optimum setting for there to be problems, what would it be - lighting up full?
So in the last month, I've got a Galaxy Note (1st version) through work and now the new Kindle PW. I'm feeling a bit special at the moment.