I'm using the Enduro XD-15 ceramic bb in my ripley. it's been great so far. I've had good luck with enduro bb's in the past. I have a chris king ceramic in my hdr and it is also fabulous, as you'd expect.
for front der, I'm using an xtr 3x (my sl cranks are actually a 3x setup that I run 24/32/bash)...I'm running an XT 3x on my son's ripley with race face sixc cranks setup the same way. he's got a standard shimano xt-level bb in his and that works fine too.
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