Mine's going back to Amazon.
My (and my better half's) PW2s were delivered yesterday. As soon as I turned mine on, I noticed a blotchy green area in the lower left of the screen, and generally uneven lighting across the entire bottom of the screen. I turned the light setting down from 22 to around 10, which improved the situation, but I can still see the uneven lighting.
On the other hand, my better half's is almost perfect (as Napolean Dynamite would say: luuucky).
I love the touch-screen and the software improvements compared to my K3, so eventually, I expect I'll order another PW2. Someone here said that she was going to wait until the 3rd or 4th batch in the hopes that any initial manufacturing kinks would be worked out by then. I might do the same--but, how do you know when a new "batch" is being made/delivered?