Ended up getting Balo rotors -- they've performed awesome in the last year.

I've got ATE premiums on my 300E and they're great. Strong power along with the OE MB pads, no fade, no warping after 15k, minimal squeaking (about 1/2 sec of light squeak coming down to a stop) - can't hear it unless the window is down and you're next to a barrier or something, and that could easily be the pads or calipers too. I am very happy with them, well worth the extra money IMO.