Also not cheap but I really love the Remarkable 2. It's great for handwriting and good for reading. I had an onyx boox note 2, which would be a good size for reading text books, but it's even more expensive. Seems like anything with a large e-ink display is expensive. Right now I use an Onyx boox poke 3, which I found reasonably priced for a flexible e-reader. It's small but I mostly read non-technical books so it's fine.