Take a look at the Kobo Elipsa. I know someone who has it and they like it a lot. They use it daily at work for taking notes. I think you can export your notes to a computer by connecting it via USB and mounting it as a drive.

Magit is incredible! It’s a thin layer over git commands but with a nice discoverable UI. Even if I’m using a different tool to write the code I’ll still use Magit for the repo.