a lot of people claim that rda rotors aren't as good as dba, and claim that they crack under hard driving.

obviously this is completely dependant on driving style and power, but I had 2 trackdays with rda slotted and dimpled rotors (also come in a cool grey colour) and had no problems. Also had 1 trackday on the slotted ones and also had no problems. They are cheap and good enough quality