Personally, I find it to be an excellent ebook reader. Easy to navigate, and works well with epubs and PDFs. I like to highlight and annotate on books as I read, and to me that is an absolutely killer feature that the remarkable allows me to do. It also saves a separate copy with the annotations so you aren't marking up your original, which is something I really love.

Devices made specifically to be e-readers are usually a bit less friction. but to me, The openness and hackability of the remarkable and it's excellent feature set for writing makes it an excellent choice.