I should be receiving my drilled and slotted rotors this week. They are from a company called Disc Italia and
Brakeworld.com has up until recently been the only US supplier to get them (exclusive distributor contract which has run out).
This was the only company I could find (Brembo didn't even have them) cross drilled and slotted. I am going for looks and performance. For an extra $80 a rotor (I think), I had them cryogenically treated so the stress cracking and warping would be kept to a minimum.
Now, I will be keeping my stock rotors... hell, I may even have them slotted by
Porterfield just for track use.
I will also be receiving my
Porterfield R-4 (race compound) pads hopefully this week. They have stated these are higher in noise (squalling) and dust than OEM pads, but these are for racing conditions which I will be experiencing next month at California Speedway.
Porterfield makes a street pad that has low to no dust their
R-4S compound.
If they don't have them in stock... they MAKE them for you. They had to do this for the race pads I ordered.
All in all, I agree that cross drilled doesn't do anything but make them look better. Slotting is what you need for the track. Plain solid rotors are what you NEED for the street.
As to what you want... that's always different.