I have the SBS pads and really like them.
I ordered them a few years ago and they didn't fit (had to run to Hal's in Sunrise and get a quick set of Galfers). The paint around the holes on the sliders was too thick and they wouldn't fit.
I contacted SBS in Denmark and they had an R&D tech talk to me; we worked together for a few days and then they sent me a new set with unpainted backing plates.
They stop great and don't develop any fade; there's less dust too (not that I care about that...).
If you get SBS, make sure that the backing plate is copper colored, not black.