I use the Boox with papers (so almost only PDFs) on the internal reader and on Android readers; it works really well. In the end I keep using the internal reade

I use the Boox with papers (so almost only PDFs) on the internal reader and on Android readers; it works really well. In the end I keep using the internal reader because it has split view for me to scribble notes next to every page. Disclaimer: I am older with glasses but not reading glasses; I read fine with incredibly small fonts; I prefer it that way. So YMMV but for me and for PDFs it is an ideal device for sure. If the built-in reader is not good enough, you just get one from the Play Store; there are enough very good ones there.