I own a glo, and with a lot of books (over 2000 or so) it is extremely slow to process them when they are uploaded, also any of the library functions are painfully slow. I have experimented with an ext formatted microSDcard, see
https://www.mobileread.com/forums/sho...d.php?t=213727 , which helped, but did not solve the problem.
I will definately be getting an ereader with a file browser rather than library functions next time, onyx would fit that requirement.