"Until now was using the Shimano equivalent as many have already mentioned in other reviews. However the teeth had become bent and mishapen on a few of the rings so thought it was time for a replacement. Nearly just replaced it with the same again but then I saw the reviews for this cassette and am glad I went for it. Much better than the Shimano in nearly all aspects. Shifts excellently with hardly any noise. Very smooth changes with no chain jumping and also very precise. When put next to the Shimano it feels of a much better quality metal and it's lighter!! Not of much importance but also looks great as has been chromed. The technology on the cassette rings is also much improved over the Shimano which hasn't been changed or improved over the years (well not for the 8 speed anyway). Overall a great purchase from a great brand and great shop."