Best/Reliable retracting disc brake calipers

my shimano 755's do just fine.......... clean and adjust correctly and they should all work correctly..

BB7's... You'll never have a sticky piston.

Other than that, my HFX 9's work well.

Double post

Um.........any of them? As long as you maintain them, all will retract fine, and be reliable. Do nothing, and just ride with no maintenance, even the top racing calipers in the world will start sticking on you.

What type of riding do you do? That's going to be more important than me saying Avid Elixrs are the best, and you ride a 50 pound downhill rig.