One drive for business on Passport.
I am a month in on this and I am liking it so far. No file manager integration like Box but that's OK. At first it can respond a little slow but it has gotten better. I am getting used to the interface, so many more options than box. I would rate the added security and security options as a Big ly plus compared to a free 50gb Playbook Box account.
Can't discount the two step auth at Box either. Used shortcut creater app for a homescreen icon.
Sent from one of my SE Passports using BB10 superior software.