I've got a 302 with the 15.2 firmware. When I try to select a menu option or whatever I have to poke quite a bit down from the actual word. As you might imagine, this makes changing things very difficult. It seems to be that way for all links - it's alright with the books, because the area is so big, but when I'm trying to, for example, change a font it's a real pain in the neck.
Besides that, I *love* my Pocketbook and have had no real troubles.
Well, I also wish there were more games and apps for it, since that's one of the reasons I bought it, but I don't really need to be wasting more time than I do.