I would trade 20 hp for 4 pistons and larger rotors on any road course, make that even dual pistons.
One thing I think that you forget is swept area. Idealy this should be as large as possible and cross drilling reduces this. It also is prone to cracking. Real holed rotors like those from manufactures are cast into the rotor to avoid this. Slotted rotors should reduce gas and should be IMHO the best idea!
Ok now thats been said I will be purchasing the Brembo rotors as soon as possible. Brembo has a good name and rep. I think you will be happy with your choice as well. Keep me informed on how they worked out.
