I respect Frank and Serge’s opinion ( both old codgers) when it comes to turntables, rotational accuracy , low rumble, wow flutter, some resistance to external vibration in this regard Technics are exceptional.
In the U.K. many gullible ’audiophiles’ were indoctrinated to believe that somehow a kitchen table belt drive design was better.
You could also argue that Linn’s ’single speaker’ demonstrations set back accurate domestic reproduction.
Keith
Linn demos (as I remember them) often pitted their Sondek suspended chassis design with a 'run of the mill' SP-10. The arm for both was the Keith Monks unipivot mercury damped device. You could lift the entire arm off its base and place it on the other deck, eliminating one variable since essentially the same arm/cartridge was used to compare. [I owned one of Keith's tonearms, but never mounted it. I'm not even sure you can buy mercury over the counter anymore. Does the EPA allow that?]
However it was, early direct drives usually came in 'flimsy' bases--typically resonant wood, or like the SL-1100a, a hollow cast aluminum shell. It was only later, with the advent of the SL-1200 v2 which was used in pro environments (discos), that internal mass damping was really investigated. I know that Kenwood had bucked the trend a little earlier with their concrete-resin base KD-500.
SP-10 v2 marked a change in this. First, it was heavy and the factory base was more solid and massive. Too, aftermarket 'hobbyists' started modifying the big DD. Most notable was Mitch Cotter, who stripped the motor off its aluminum shell, mounting it on a dense layered acoustically dead (and massively ugly) expensive blue base. Sao Win took an alternate approach, fitting the Technics motor within a damped suspended spider (hearkening back to his work with Ira Gale), encasing it all in a very beautiful (and very expensive) Lucite case.
I have no idea how this latest and greatest fares among the higher priced record players. But I imagine it is right up there with the best of them. Sure, it's expensive, but in this case it actually looks like you are getting your money's worth.
Below are some pics to compare: Gale DD, Sao Win turntable (this is the SDC which didn't use the SP-10 motor, but it is said to look the same as the later Technics derived SEC-10), and the Cotter contraption.