I've been using Calibre, and when I look at the "device" I see a Collections column with nothing in it, even though I have been organizing the books into collections. I basically load a book onto the device, go to in Library / All Books on the device, sort by "addition Date", and add each one to a collection.
It would be way nicer if the collections would show up in Calibre, and even nicer if I could assign them or organize them there instead of using the device menus (which of course are slow and clunky compared to a PC app).
Any help is appreciated.