While I think the ceramic hybrids feel much smoother than the standard bearings the jury is still out on whether there is any real advantage at all. I do know poorly make ceramics, and I think this would apply to full ceramics too, can be a worse choice then a well made steel bearing. Madcow has tested the bearings that Fairwheel sells so that if you choose to go that route you're not getting a bearing that is worse than the stock. Some day I may try full but I just really have not ventured that far yet to get into full ceramics but I do have a couple of race wheels that could be eager volunteers!
For my next trick I will set myself on fire!