on my tablets, i use Google Play Books, Kobo's app, and (soon) the Kindle app for books i buy from the respective stores. however, for sideloaded books, i'm not sure which NEW app to pick...
1 - i want this to be a separate app so that i know which books are sideloaded and therefore NOT synched to the other tablet/reader/device
2 - ability to read epub, mobi, and possibly txt and pdf
3 - i can set up folders or groups so that if i load 500 books, they're somewhat organized (ideally via PC USB connection, but that might be asking too much)
4 - it can sort and display using the "series" and "series number" metadata
5 - i can pay a few bucks for it, doesn't need to be free
&
