whats so great about hydraulic brakes though? if i upgraded to disc brakes, which ive been considering with considerable consideration, i think i would like mechanical. if they break or something out in the woods then at least i can work on them, whereas (i would imagine) a failure with hydraulic brakes would leave me essentially brakeless. maybe im just being naive, though, because i havent done my homework on the pros & cons of hydraulic over mechanical.