Yep. Been through many headsets, but never had a CK fail. It's usually rain combined with pounding down rough pavement at high speed that does them in. Our CK tandem hubs are a dream. The only hubs I've ever owned that were what I would call reliable and low maintenance. I take them to my wheel guy once a year and he services them for, I think, $15 ea., plus he knows what he's doing since he's a CK dealer. I ride these suckers in the rain year 'round and they're as smooth and quiet as the day I got them as a component on our used Speedster, many thousands of miles ago. That's a virtue beyond price. Would I have been canny enough to order them as an upgrade on a new bike? Probably not, but I'm glad someone did. Ever look inside one? Looks like something NASA built in a clean room in there.

When I ran Ultegra cone-and-cup hubs, I had to rebuild them about once a month, more often if I had a bike shop do it. Nothing like running up the miles on wet, gritty roads for increasing maintenance.