Kindle Paperwhite #4 arrived this afternoon. I'm not sure what I think about it yet.
The screen on the new PW looks like it is pretty much all one color leaning to the bluish green. When I compare it to my current PW (#2) with both lights up to 24, the new PW is not as bright as PW #2. That may not be much of an issue. I'll spend some time reading on it tonight and over the next few days to really decide.
One weird thing happened. At one point on the PW #4, the light just turned itself off without any input from me. It also stopped responding to my touch. I had to turn the PW off and back on again to get it to work. Hopefully, I won't be trading one problem for another.
One other thing, this time I got an upgrade to a non-SO PW.
