Note: I use my reader mainly to read my own collection of documents/novels.
Transferring files from mhy PC to iPad was straightforward, and organzing my books into folders makes organization very easy.
One problem, for me, is that I like to read in landscape mode, and prefer a 2-page, side-by-side layout. KyBook has not option for this. Reading in landscape when in a single column makes the page too wide for comfort for many of us.
DocTerryC about KyBook - EPub,FB2,PDF,DjVu Reader, v2.0.7