Carbon wheels are never going to have amazing braking performance, no matter what you change. My experience for calipers is stick to name brands or performance suffers a bit (aka don't go with planetx, I hate mine on my tt bike). For pads, I thought yellow's did okay other than yellowing the wheel. I'm trying the black prince right now, but only have like 20 miles on them. It seems to not bite as much, not sure if that's a good or bad thing yet, I need more time on them.