I don't know what you guys have, but I have the permium in my X and I think its actually pretty damn good.
I had dsp in my 2004 X and it sucked, untill I put the stealth box and jbl amp. then it has some kick. however still not as good as the premiun I have now.
What are you guys listening to?
and I think the premium sounds better then any of the other manufacturers stock sytems, cept maybe lexus(in terms of quality sound).

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M3