I have hubs with center lock so I skipped Hayes rotors (only 6 bolt) and tried few options: - shimano icetech freeza discs (1.85mm): lacks power and preatty noisy - swisstop catalyst pro (1.90mm back/1.95 front) decent braking performance but warped and deformed a lot! Had to re-center the calipers after nearly every ride when with new brake pads. - Galfer shark centerlock (2mm): these are really good! Braking performance is outstanding, they stay true and are quiet. No rubbing issues even with new brake pads. Only cons imho is they cost a lot. All discs are 203 mm front...