I guess we are going to have to agree to disagree on this one. Threads on ceramic bearings always seem to degenerate into two opposing camps;
1. The cynics who point out the weight savings are miniscule, the rolling resistance improvement so small as to require fine instruments to measure and the cost excessive. We haven't bought them because we do value objective measurements by "experts".
2. The true believers who insist these bearings are a huge improvement over their older steel ones, their riding experience is so much better and easier and the cost is well worth every penny. "Seeing is believing; If I hadn't believed it I wouldn't have seen it."