I LOVE JuJuBe and am completely addicted to their bags... that said, I've tried almost every one of their bags and sold or returned some because they weren't quite right.  The be Hip IS AMAZING!!  The be prepared and BFF are wonderful as well.
FYI...  on the be hip -  you can thread a short strap (from a be-set or a be-major or another strap of some sort) through the crumb drains across the bottom of the bag and attach BFF backpack straps to it making it a comfy backpack!!  LOVE it...  :)