I've got a Raceface Cadence on my S3X build. I liked it so much, I bought a second one for my gearie.

I had a second hand Truvative one that was ruined somehow. When I would torque the fixing bolt to the recomended tightness, it would still come loose even with locktite. The RF cranks require precise measured BB width so that they can use a hard stop on the installation of the separate arm.