Well they don´t function better than Record brakes they functions just as well and are LIGHTER which is the only point with Zero´s so unless you want to build a 6,8 kg bike (or less if your not racing under UCI rules) they have no place on your bike (well except for looking cool). I bought them because they are lighter, they are beautifully machined, stop just as good as previous brakes, ARE LIGHTER , got a good deal on them, oh yeah they are lighter, and well because I wanted them. They were difficult to set up initially and I had misalignment issues the first time around because they were badly setup by a mech who rarely saw Zero G´s after a visit to a more experienced one I have no problems what so ever. Did I mention they were light?