For both my ML and 400E, Zimmerman rotors have proven to be the most stable. I am pretty sure that the Zimmerman coated rotors ARE the MB OE rotors without the star... save yourself a few bucks and don't compromise on longevity and feel. There are a number of companies that make brake components and I think I've tried them all. For me, the Zimmerman brand has been a solid choice... Pads.. I am a Akebono convert. I was a solid OE only persona before but now I am sold on the Akebono Euro Ceramic user. Very good brake feel, reduced dust, smooth and even rotor wear. I would dare say that I am getting a little more life out of my pads and rotors compared to previous combinations.

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Jeff
'87 300E
'92 400E
'06 ML350