I actually bought one of the 4-door mini's with a roof rack. Its bigger than the 2-door, but not a lot. The Fit can definitely carry more. With that said, I mostly keep the rear seats down and at least for my use case (2 person household, road tripping, larping) its been plenty big enough. So much so I've not actually used the roof rack yet.

So yeah, the fit is less expensive to buy & own, and probably more practical. But the mini has its charm. :)