I've been playing with my brand new KPW2 this evening--received it earlier today. And so far, I'm very impressed--and feel very lucky. My screen looks almost perfect to me. No pinholes--at least none that I've seen. And the color is very even--just some very very minor shadowing at the bottom when I'm reading in a darkened room. So minor that I don't really notice it at all unless I really look for it.
Coming from a Sony 650--I'm going to miss the page turn buttons. On the Sony, I could hold the device with one hand really easily resting my thumb on the page forward button and just depress it to turn the page. I'll need to work out a different way to hold the PW.
Don't think I'll give up my Sony Readers completely, but the KPW will probably become my go to reader--time will tell