I believe all the hype about drilled rotors...but I went with a cross drilled/slotted combo from IRotors.com anyways and completely satisfied so far.
After 8 months they are still in great condition. Can barely even tell that they have worn at all. I would have went with a Brembo rotor, but unfortunately they don't make em for the E46 M3.
I still find it hard to believe that the drilled are dangerous. Mercedes, Audi, Porsche, BMW, and any sports car use em. After reading this thread I guess they are all done the proper way though. Every BBK (Brembo, Stoptech, Wilwood, Rotora, etc) all use em. The question is how are they made....