> Worth nothing that KOReader doesn't replace the default Kobo firmware. It's easy to install and you launch it from the Kobo firmware so it's easy to quit and go back to normal.

Ah, that's definitely something I missed, sounds like a good reason to give it a try!

Same for Kindle. Nothing changes, you just have a link to open KOReader and you can still use your device as before, if you choose to