Well, it depends on how much you want to spend...
Good luck!
If you want a complete upgrade of the front brakes, including rotors and calipers, the C32AMG's do fit. However, this is the most expensive solution by far. If you simply want cross drilled rotors and better pads, check out formymercedes.com for their KVR rotors and Porterfield pads. I'm going to guess that this will be the best solution for you, as far as cost go.
Good luck!