I really like my Boox e-reader because I can install any android app on it. I run Storyteller on it and it syncs position to my storyteller server. So i can listen to the audiobook on my iPhone and then pick up reading on my Boox from where I was listening.
I find the battery life on boox tablets to be pretty poor. At least with my usage.
Its kind of annoying to have to be charging every other day.
I think I've only had to charge the xteink x4 a couple times since I got it in March. But that's the case for any non-android ereader.
I'd be happy if the boox lasted a week with 2-3ish hours of use a day.
I also really like Boox. I'm on my 2nd Boox product now having upgraded from my old Max Lumi so that I could get colours.
I've always wanted something like Storyteller for non-Amazon devices. Thanks!