I learned that 9-10 inches is to small to annotate pdfs so I decided against remarkable or supernote a5. To be honest, most science-y documents I read by the computer, because I try to use knowledge right away in some notebook and/or repl.

But then I noticed that I also read substantial amount of soft skill/self help/popscience books and they're easily obtainable in epubs. I pulled te trigger and bought supernote a6x. It size is perfect. I can read and annotate on the go, I can jot during coffee breaks. I take notes on the meetings and then I can put supernote on the stand beside monitor and see bullet points/todo lists for this day.

Supernote support and community is very helpful and constant upgrades take user requests into account.