@lewm - I thought that @mijostyn was a SOTA guy. I agree with you on wall shelves for tables - especially lightweight ones like Rega for guys like me with suspended wood floors. I have mine sitting on top of a Townshend platform that sits on the shelf for maximum isolation. As per Roy Gandy, a turntable is simply a vibration measuring machine.
I think the DD vs. Belt debate is moot though, like most other general ones (digital vs. vinyl, SS vs. tubes, open vs. closed baffle, planar vs. boxes, etc.) as it depends on the execution and implementation of the specific product.