Buggin, I think it is the drilled part of the rotors that is noisey..... I had slotted rotors on the Aero and they were not noisey at all..... I put a set of Xbreak drilled/slotted on my Intrepid to try them out and they are very noisey when I do more than a gentle stop.....

Interestingly though.... I put C32 calipers and the MB factory drilled/slotted C32 rotors on the Aero and they are perfectly quiet........ I dont care why, they work great!!!