wturkey, I doubt it will make a big difference. It might effect noise levels but for better or worse? Depends entirely on the quality of the bearings and the type of cup or thrust plate being used. If your turntable is quiet and running well I would leave it alone. If the ceramic bearing is inexpensive then you have not much to lose trying it. It would be interesting to test rumble levels before and after the switch.
Balls.....
Who here has upgraded their turntable platter bearing with a ceramic ball? What were your impressions of the upgrade? Worth it, not worth it? I have a VPI non-inverted unit. It appears there is a gentleman in New Jersey that performs the upgrade.