Have you considered EBC's green or red stuff brake pads? I hear they're pretty good. Portfield RS4 is not bad either, but has a drawback that they need to be heated up before they really work. I believe Brembos use RS4 or that's the pad that my friend has on his brembo kit anyways. Then there is the Endless pads...those are supposed to be pretty good, albeit they are pricey and you have to do a slight modification to them to make them fit.