I am finally very happy with my brakes. While I initially set out to do C32 brakes, I ended up with the same thing except instead of 345mm (13.5") rotors I have 330mm (13.0") rotors. My calipers are CL500/S class which are the same as C32 except made for 330mm rotors. I used SRT front rotors which were Ebay drilled and slotted. The brakes had a horrible squeal so I changed to Disc Italia which in my opinion are worse than the ebay rotors. They appeared to be indentical castings except the disc Italia rusted very quickly where the pads don't contact them. The Disc Italia's were also just as noisy. Last week I switched to factory OEM rotors that I bought at the MB dealer and now everthing is smooth and quiet. Before switching rotors, I tried to make sure it wasn't the pads. I tried three different pads, (OEM, semi-metallic and Ceramic). The ceramics were the quietest but still had a loud squeal just before I came to a complete stop. I am now very happy with the CL500 calipers, SRT/SLK32 rotors and posiquiet pads.

for guys on a budget, the MB/Brembo's from an S/CL class are much more plentiful and cheap. The rotors are also cheap as well.

I just bought a very unique set of rear calipers from a S/CL 65. These calipers are also Brembo but are four pistion and look just like the front calipers but smaller. With these calipers I will be able to run vented rotors on the rear. Not sure if these will work but will let everyone know. I will post pictures of them as soon as they arrive. Should have them by next Monday or Tuesday.