Hmm, I guess it's just something that you have to check out for yourself. Since I have both a 330 with L7 and enhanced sound in the M3, I hear the difference everyday. To me the difference is very noticeable. I also feel a huge difference in EDC now. For the first couple weeks of ownership, I didn't feel anything. But now after 1400 miles, the difference in sport and comfort is night and day. Maybe it takes a while for the difference to show or maybe I am just getting to know my car better.
