I have the brembo wave rotor 320mm from Galfer Brakes, combined with galfer pads and braided line. The rotor requires no mods to the bike, just bolt on the rotor and the caliper relocation bracket. I definatly reccomend this mod if you are doing a lot of street riding. I installed mine for use on the race track, I'm not sure if your familiar with Infinion raceway (Sears Point). At the end of the straight away is basicly a 90 degree right turn, and lap after lap burning into that corner at 98mph I slowed to my entry speed with just front brake and downshifts. I did smell brakes useually towards the end of the sessions but only in that turn and there was never any brake fade.
On a bad note however I have taken my bike on the trail since then and on a dusty loose dirt road with my 80/20 street/dirt tires all you have to do is look at the lever crossways and the front will lock. Though mine is a street queen with the occational trip to the dirt so I didn't mind the dirt dissadvantage.
Hope this helps you make your decision... I know that EBC makes a rotor aswell, I just thought the wave looked cooler so I got that one instead..