I managed to test the Kobo in a store with a bunch of epubs and other files I brought on a SD card and it behaved well enough to buy it. PDF viewing is atrocious, but that's not really what I planned to do with it.
Went home, set it up with a clean virtual machine and rolled it back after the deed was done & turned off wifi. Organizing my books into shelves was a bit annoying, too bad that the Kobo doesn't identify folders as shelves. Now I'm trying to find a nice cover, the usual ones are superfat and the slim gecko is kinda meh..
Thanks for the replies!