If you have not had the chance to drive this car, then like Napoleon D. says, "You don't even know!!" I have owned Porsches and recently driven a Z06; this car is way more fun. It is easily the best sports car under 75Gs. Unfortunately the last M3 with a straight 6 has already been made, and only a few are still available. (By the way - get the stick!)
The engine note. Whoever said this is a disappointment must have never opened it up. And, it's way fast.