I got Brembo front slotted rotors and Brembo x-drilled rear rotors. I really think slotted (if you are hard on the brake) is better in front cause x-drilled seem to warp to fast (little wave in the disc). But again I have Hawks brake pads and they are really hard on disc but also brake like nothing else...
I really enjoy this setting but never had the chance to try this on the track. Hope this help.