Terry9, have a SOTA Cocmos and an SME 30/12 and no matter how hard I try I can not hear the bearing on either turntable. How do I know?
Like Michael Fremer I have Pure Vinyl and can record records to the computer which by the way I do not due on a routine basis. I recorded the same record run out track from both turntables trying to figure out which one made more noise. Switching from one recording to the other, with the exception of slight differences in frequency response (different cartridges)
They sounded exactly the same even EQ ing the bass way up (rumble).
All the audible noise was on the record not the turntables. I can not tell if an air bearing makes a difference but given the above results I seriously doubt it. It is an exercise in technology for technologies sake just like this thing. Which means that rich people make more dumb mistakes than us regular guys:)