Turntable with stable speed.

No regrets, You have brought up the most commonly discussed issue on the Analog site. There are two or three active threads devoted directly or indirectly to this subject. Look at the current top ten threads, and you will find in several cases lively and acrimonious discussion of your topic.

DrPank, I can only agree fully with one point you made: drive technology is not the determinant of speed stability. It can be done with BD, DD, and Idlers. But not all turntables do it, nevertheless.

Sorry, I meant "47 Labs" not "RS Labs".
see here

In the above, I was referencing a post responding to Doug that was not posted.

I cited the novel design of the 47 Labs tt as a cure for belt creep, among many other things I wrote in said post. Another treatment I mentioned was use of a capstan to keep the belt close to both the platter and the motor pulley over most of their circumferences.