Originally Posted by
ghettocruiser
Having used both, I'd say XT hydraulic brakes are noticeably lower maintenance than cable disks.
There are also more effective in the winter.
BB7s are good. But XTs are better, and they (M775s) are what's on my commuting MTB.
Most downhill bikes these days use something more substantial, like M810s.
^Totally agree. Obviously any of them will be good enough, since most people get around fine with rim brakes.