On my M3 I am running Rotex Gold. I am very pleased with the performance but my goal was to reduce brake dust to a minimum. Regardless, I have punished these brakes on some runs and they have held up extremely well. I guess it depends on your objective. I think better braking comes with the "headache" of more brake dust but I am no expert.
2002 M3 Steel Grey, 18" Fikse Profil10 (235/40F-8.5" 38ET, 265/35R-10" 32ET), Michelin PSS, KW2, Eisenmann 83mm, V2 AE, RE RSM, PF RTABs, Painted Reflectors, Hardwired V1