I've had both, assuming that you wont be going everywhere at full chat, the car that I would have hardest time walking away from after lets say a year, would be the BMW, its just a far better car!
Having said that, 11k would buy you a very nice Audi A4 Avant S-Line, which I've also had, and just sold on to make way for an A6 Avant, the A4 for me was the most user friendly and practical out of the 3... loads of room etc, but not actually a "big" car, and great to look at!
Thom