Yes, It seems that even the well-isolated SME tables do benefit from additional isolation as I have found with my ballasted Vibraplane. Rockitman discovered the same thing when adding an active-isolation platform to his TechDas which already has air isolation and an HRS custom platform.
That SME stand looks very serious. Perhaps, one day, the design of its isolating pillars will find its way into the isolation towers of the larger turntables.
I wish they would offer a two-arm model and that this Model 15 would accommodate their 12" arm. I bet it sounds significantly better than the Model 10. The newer power supply/speed control and suspension towers must be real improvements plus the much more rigid arm board. I wonder why the record clamp changed.
If it is significantly less expensive than the Model 20/3, it should be very competitive.