There are quite a few changes from one model to another. The new MINI interior is different as is the engine. It was a pretty good overhaul but still a good looking car with a lot of nice features.
That being said, the only downside I can see to it is that the older model has a proven track record where the new car is still working out the "undocumented features" of the vehicle.
I would say that you need to drive them both to see which one you like the most.
