does anyone have or plan to get the Eisenmann exhaust for their e46 M3? if so, what are your thoughts on it as compared to the factory exhaust. i drove one at the dealership and totally felt in love with the exhaust. however, i'm not sure how it'll turn out in the long run. while driving the car, i felt more power and responsiveness when shifting at higher revs. it am in love with the mean sound that it produces. are there other companies that manufactures such quality and power comparable to Eisenmann for the e46 M3? let me know what you guys think. i am leaning towards getting one