Curve OM cantis. Yeah discs have their advantages, but well set up rim brakes can deliver surprisingly good bite and feel. This set of cantis look great, weigh hardly anything and have done the job superbly for 16 years. Totally adequate on tarmac at all speeds. In XC riding, only on the very steepest singletracks do i find their limits and even then i'd be more worried about cables breaking than the actual performance. I suspect that many people who scoff about how cr*p rim brakes are have never used them, or just don't know how to set them up, or use nasty pads or worn/bent rims. The [braking]power-to-weight ratio of these components has always surprised me.