The Raspiness with the 1M is kind of a downer. But its inherent with most Turbo cars i have heard with a good exhaust.
On the other hand.. the Akra on the E90M is like god reached into the bowels of the earth and forged its creation him self.... Thats how beastly it sounds.... This is one of the main reasons my next car will be an E90M. its the last of its breed.