I was hoping some of you knew of good PDF syncing software that might be out there. I'm in grad school, and currently have lots (and I mean lots) of large PDF files on my computer, mostly of scanned documents and handouts. I'm looking for a way to be able to sync these documents between my MacBook Air, iPad, and (preferably) iPhone via the cloud. I love the way iBooks syncs its own books, right down to the last page read, and I'm really looking for something similar for my PDF's. I've tried Papers, and it seems really, really nice, but I wish it were able to sync to the last page read (a la iBooks) of your documents. Often I switch between reading on my MBA and my iPad throughout the day, and sometimes even read on my iPhone when I'm on the train, so being able to sync like that would be really helpful. Does anybody know of software that might be able to do that? Any help is appreciated!