I was gonna get the slotted or drilled but people kept saying that there is no real difference and you have to be hardcore racer to feel any of the good effects they may have. It's a great setup, I love the difference and it feels complete now that I have new tires as of 1 hour ago. The only thing I wanna do is get the brakes bled again because the pedal feel is not what I want it to be, a little slushy-like, but it still stops on a dime if I need it to!