As a daily driver the BMW will be better but the 912 will be more fun and much lighter in weight. Still quite sporty if you use the right setup. If you don't mind crawling into the 912 all the time then its a no brainer, the 912.
Don't forget, the 912 will more than likely have NO air conditioner except when you roll down the windows.
Don't forget, the 912 will more than likely have NO air conditioner except when you roll down the windows.