hi folks – anybody want to chime in on what their favorite bottom bracket crank combo is ? any opinions about the Zipp VumaChrono and VumaQuad products ? The Quad seems like one of the lightest. I currently use Zipp 300 on one bike and it’s good; I also have Dura-ace , ultegra , and an FSA set on other bikes. I guess I am also wondering about which ones provide the least friction. Maybe they’re all about the same. So… any advise would be appreciated.
thanks. – josh