Boox makes e-ink Android tablets for reading and sketching. I really liked the Poke3, and used it as my main ebook reader for almost 5 years, but it's showing its age and struggling with newer apps. I finally replaced it with the Go 7 Color and it's been a drastic improvement!
It's a lot faster, so it can handle today's apps, the touch screen is way more responsive, and it's so nice to have physical buttons for page turning again.
The color isn't as sharp as the black ink, and it tends toward pastels, but it's good for diagrams , and for using apps/websites that assume you have a color display.
