Pads: Acor Yellow's Time used: 3-4 months Rim used: Try-all Grind: was grinded, Now sanded to smooth Ceraminc: No Brake used: Magura 05, Echo cnc lever balde, Metal Tpa. What is your opinion of a working brake: Good hold and bite, Little bit of noise. How do they compare to previous pads you have used: Amazing. Review: When I first got these pads I put them on a grind and they had good hold but no bite and had no noise. I then sanded the rim down and they became really good, hold improved and bite did aswell, but still didn't have alot of bite. Nice noise aswell, not to loud so it gave me some convidence Today I took my booster off and jesus It's amazing, loads of bite and hold, Noise beacme good aswell. On a grind they really did lose alot of wear but now they are on a smooth rim, Wear rate is amazing Got these pads for £9 from my local Bike shop aswell.