[tomsem]

I like the 2019 Kindle, which I bought for about $5 during a promotion, plus trade-in credit on a PW1 (slow as snot, only 2GB storage, and murky screen). I actually don’t use it much because I have TMK syndrome (Too Many Kindles). It’s certainly a vast improvement over the PW1. As others suggest, PW2 has higher display resolution, but I think 2019 Kindle should be a bit zippier because it has more RAM (512MB vis 256MB). The front light should be more even as well given there are 4 additional iterations on the technology. The RAM boost came about in 7th gen and later Kindles because Amazon needed to have enough to support VoiceView screen reader, but it also helps out with performance. And it weighs less.

The PW4 has similar dimensions to earlier models but I don’t know if it is cover compatible (I suspect it depends on the cover as the backs have different shape). I don’t feel a need for one myself, it just makes it heavier and more awkward to hold.