I can only relate my own experiences, but my favorite e-ink reader is, oddly enough, the Kindle Paperwhite, because I can tear through books with its stupid-fast dictionary lookup. (And changing dictionaries is also amazingly easy. Don't get the Android Kindle app though, it sucks.)
I used to use Verical Text Viewer and OCR Manga Viewer on Android. I still like them a lot, but I'm hooked on the speed of the Paperwhite (even if I'm not a fan of Amazon's distribution policies.)
The major downside of the Paperwhite for something like Anki is that there doesn't seem to be a way to export your 単語帳 that I can seem to find, which kinda sucks, because mine is getting to be rather unwieldy, and copying it by hand is just all kinds of time-consuming non-fun time.
I used to use Verical Text Viewer and OCR Manga Viewer on Android. I still like them a lot, but I'm hooked on the speed of the Paperwhite (even if I'm not a fan of Amazon's distribution policies.)
The major downside of the Paperwhite for something like Anki is that there doesn't seem to be a way to export your 単語帳 that I can seem to find, which kinda sucks, because mine is getting to be rather unwieldy, and copying it by hand is just all kinds of time-consuming non-fun time.