This weekend I invested in a new bike and Yakima bike rack. I was very opposed to drilling holes in my roof and didn't trust the roof racks that attached to the black plastic rain gutter. What I found was the Yakima “Mo Joe”. It fits the MINI perfectly, holds three bikes, and retails for only $130.
I'll give it 4 out or 5 stars for it's good fits and easy installations. The only downside is that it's not as secure traveling at highway speeds during windy conditions as it did tend to sway just a bit over some larger bumps with two bikes. Other than that the car doesn't seem any worse for the wear after a three hour trip.