These look great! I still have a Kindle Voyage from 2015 that's going strong, though I do wish it had the warmer LED lights. It's nice to have some devices like this and my Fujifilm XT-30 that don't make me feel the constant need for upgrading.
Weird how there is still no real successor for the Voyage. They somehow refuse to release a 6-inch device with warm light and a light sensor for auto brightness.
And with the lack of immersion reading on e-ink devices, I don't think I want to buy another Kindle again.