My Nook Simple Touch's battery finally died, after a few years of heavy use. I rooted it, using EBookDroid for reading PDFs and DjVu and the lame built-in B&N reader for EPUBs. Replacement batteries are about as much as buying a used Nook.
Are there any good alternatives to the Nook Simple Touch?
I am looking for one that:
- has a smaller screen (such as 6")
- supports an SD card (or at least has 32GB+ of internal storage)
- is black and white (e-ink technology), perhaps even without a backlight
- works well with Calibre
- is open source
- preferably supports the latest EPUB 3+ standards, and thus can render math with MathML
- preferably doesn't need rooting
- possibly supports DjVu out-of-the-box
Onyx readers are nice, such as the Onyx BOOX Classic; however, that one is discontinued. Where could I buy a similar one that meets most of my above requirement in the U.S.?