ano ba budget mo? the cayenne and g-wagen (G500) are about $80 - 100k. For that money, I'd go with a Porsche 996 Carrera 4S

I agree with almost everyone else that if you have the money to spend (about $50k), go with the M3. But if you're looking to spend about $35k (the other cars on your list), I'm partial to the WRX STi.