Motorsport, I JUST did a Centric rotor and Cool Carbon pads job on my 4.4i and I'd go back to factory in a HEARTBEAT if I could afford to.
Factory Pad and rotors may dust a bunch, but stop incredibly well and I have to say these cool carbons and centrics dust a LOT of dark brown as well.
Not sure why since everyone else says they dust a light color dust and not as much but my experience with these pads is horrible in cold climate.

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I swear, my cars are like a girlfriend.
Sometimes its a rough ride, sometimes its smooth motorin'.
Sometimes she doesnt like how i treat her and sometimes i dont like how she behaves.
BUT at the end of the day, she loves it when I am inside her.

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'91 850i
'05 X5 4.4i
'09 Clubman S