> I'm upgrading the brakes and rotors. Are there any significant
> differences between slotted and drilled rotors? I suspect performance is
> the
> same, but I haven't found any information stating one way or the other.

From STOPTECH Faq's: "StopTech provides rotors slotted, drilled or plain.
For most performance applications slotted is the preferred choice. Slotting
helps wipe away debris from between the pad and rotor as well as increasing
the "bite" characteristics of the pad. A drilled rotor provides the same
type of benefit, but is more susceptible to cracking under severe usage.
Many customers prefer the look of a drilled rotor and for street and
occasional light duty track use they will work fine. For more severe
applications, we recommend slotted rotors."
http://www.stoptech.com/technical/