My initial impression of them being janky came from my fellow club member who started having shuddering in the entire front end during descents, and eventually the fork rattle around in the headtube due to his "headset" being literally in pieces, not what Chris King thinks. Their bias is clear on their website, but having known other people who have been happy with their CK headsets, it was a starting point to look at if I needed to replace the headset proactively (didn't know that re-machining the headtube would be required before i started looking into it).