What Kind of Mountain Bike Brakes are you Running? [Survey]

While disc brakes are pretty much standard issue for mountain (and even road) bikes today, there are still many flavors to choose from to get the right mix of power, weight, performance, and price.
Four-piston, hydraulic disc brakes.

While disc brakes are pretty much standard issue for mountain (and even road) bikes today, there are still many flavors to choose from to get the right mix of power, weight, performance, and price.