Pads: Heatsink reds, cnc backings Time used: about 3 weeks Rim used: Ronnie Grind: Yes, medium Brake used: Magura hs33 04 What is your opinion of a working brake: locks all the time with out fail How do they compare to previous pads you have used: very very good Review: Well as soon as i put them on with a medium grind they were silent, but after a good hours of riding they started to give a good honk and had loads of bite and was holding so so well. After a week i decided to give my rim a harsher grind .... so i did and the pads were still awesome, but they lost there honk and and went to a super squeaky noise ... but still the lock and hold was awesome. These pads are also great in the wet and still give good performance. The wear rate is also brilliant, they have only lost around a 1-2 in 3 weeks The cnc backing make so much difference, they just make the brake feel alot more stiffer. Overall great pads will defiantly buy more red material.