|
Given that your main requirements are a 6'' screen and physical buttons, most everything else is optional and you're not really a Calibre user, plus you've had problems with Pocketbooks, a Boox device sounds like the best option for you. Boox devices are well known and seem to be pretty good value. I wouldn't bother with old Sony readers.
The advantage of a Boox is that you can try out different Android reading apps, to find one best fitting your needs.
I have never owned a Boox device myself, so the above is just an opinion based on various posts read here on MR.
|