ceramic bottom bracket or RDR jockey wheels?
I need to replace worn jockey wheels on my rear DR and it's also about time to replace my BB. My mechanic is touting some new, ceramic ball bearing jockey wheels and bottom bracket. Both seem impressively smooth on the 'ol spin test. But they're expensive, so I'd like to choose one or the other, not both.
To those who have tried this upgrade, if you had to choose one, would you upgrade your RDR jockey wheels or BB? Or does it not make sense to do only one, since the leaving the other as standard will negate the benefit? My inclination right now is to just do the BB since it supposedly lasts three-times longer than a standard BB, which would negate the cost.