Just spent several hours today replacing the brakes discs and pads on my ML550. I decided to go with Akebono pads to try something other than the dusty factory pads. I bedded them in a bit after getting everything back together, and I think I'm going to like them.

 

Akenono has a great reputation. What brake disks did you go for?

 

MB stock discs in front and Zimmerman in the rear. Both vented, not solid.