Are you racing your SD?
I had a one-day-and-it-was-done EBC rotor experience. Turned out for that particular application, the problem was chronic (I wasn't the only one who experienced the same). It was bad enough to where EBC started providing alternative buttons with subsequent shipments of those rotors ... EBC replaced that rotor, with all kinds of noise about it not being track/race suitable, blah, blah, blah ... The replacement they sent (with the updated buttons), remains in its box to this day.
It's been a few years, but the last set of EBC HH pads I had were such shit, that I ditched 'em for some Galfers after about 2 weeks use ... They felt all grabby initially, and then that was it. May your favorite deity help you if you get those EBCs really warmed up, and you
needto stop quickly from speed ...
You ever try CL Brakes (formerly Carbone Lorraine)
http://www.cl-brakes.com/en/products/bikes/range/ ? For street use, I like the SBK line. Suitable for the occasional track day too, but I wouldn't race with them, or use them for a high power track-only bike on a longer/fast circuit. Their "C" series are good for that.
Brembo pads and rotors: Of late, I am running the Z04 compound (
http://www.brembo.com/en/bike/Racing/Ra ... /Pads.aspx) with the T-Drive rotors (320 mm,
http://www.brembo.com/en/bike/Racing/Ra ... Discs.aspx), on another application (I4 litre, track only). Spendy (stupidly so), and not street hardware. But damn if the stuff doesn't work. I mean, like insanely well. Since the T-Drives are full-flaoters, they really aren't good street hardware in that the rattling/noise will drive most people bonkers, and those pads - well, they really are over the top for street use.
Brembo claims they are the same compound as used in WSBK/WSS ... quick warming, very consistent performance, and enough braking capability ("power") to put anyone on their head from speed - you'll run out of traction on
any tyre before these brakes give up.