My mate has just got a avid bb7 and i have got a hayes cable disc brake and i was just wondering how is is betterthan mine i just don t get it because they aea lot of money and mine wasn t i no the pads and rotor and cable can change a bit but what i want to no is how do the callipers chnge something becausewhat is the diffwerence apart from one says avid and one says hayes cheers