Love the way it looks, love the E46 type gauges..I hate the way it sounds. The S65 IMHO is light years ahead of this in terms of visceral aural quality. I didn't like the way my E46 M3 sounded either, and a AM exhaust did help but still not the S65 powerplant.
Also, with the turbos you won't get the awesome intake howl anymore. At least the E46 had that as well as the E9X.
My E46 M3..
Dave