I already have the rear King hub. I don't get along with standard hubs, I broke 6 Mavic hubs in 3 months back in the day. The Kings have been bombproof for me, so I'm gonna stick with what I know. Light wheels are nice, but not if I have to worry about them breaking, or I can't ride my normal aggressive way that I like to ride. I do like the Mavic rims, my 819's have been super strong. But the only rim I can find from Mavic doesn't seem to fit the bill, so it looks like the Flows are gonna be the way to go. I appreciate all the responses though.