Can save a good 50 quid if you chose the right lever. I swapped form a magura to an Avid bb7, and i dont regret it. I bought a new front wheel and disc from crc,was 160 for everything. Hope xc on a mavic 321, and an avid bb7 and avid speed dial 3 lever. Only thing i wish i had done differently is the lever, Got to go with an xtr/ultimate lever on these brakes. They feel so much nicer, The whole brake seems stiffer. Tom