I worked in the industry back when, too many friends and contacts to name names. The most well known brands.
As far as differences, they are like all Basis gear, scads of detail yet easy to listen to. And very dynamic. Your heart tells you they are right.
The S'Arm is super. Trumps everything I have heard.
But after trying nearly every cable out there I swapped in just Basis speaker cables and the system transformed. Doing the rest of the system over improved things that much more. In every way. They sound like music.
The cables might have been a bigger improvement in my system than even my Basis table and Vector tonearm, and I would have thought that was impossible until I heard it.
I feel the horn bass of the Westminster puts it above any other Tannoys that I have heard. There is just a "rightness" about it that direct radiating woofers don't give me.
The Westminster just plays music, top to bottom, and helps divert audiophiles from technical analysis while they are...
If a design cannot use anti-skate or if it sounds worse with anti-skate then the original design or the anti-skate system deign, or both, are fundamentally flawed.
There is no centripetal (or centrifugal) force involved in playing a record. The arm is not spinning, (other than the negligible rotation of the pivot as the arm traverses the record), the record is. The fact that the record groove is passing the stylus is not related any acceleration-based...
Anyone who says that AS makes no difference or that pivoted arms are better without ASr:
Used a very flawed AS system, or
Has a very flawed audio system, or
Can't hear, or
Did not use good methodology in the tests, or
Never examined a stylus that was used for several hundred hours under...
The Super Arm 9 is out of this world. Immediate sounding, like real music. And the dynamics! Explosive. Right down to the bottom of what the speakers can do.
To be fair to Atma-Sphere, it really depends on what speakers the amps are hooked up to. I just heard a system where the little 30 watt rig was just beautiful, clear, natural, and really punchy.
Sorry my reply here is a bit off topic, addressing a poster above.
As far as NAT, I would...
I would like a really good tone control on a preamp, one that can be switched out. Sometimes the high end dogma gets a little rigid. Enjoying a recording that is not perfect can be more important than the slight compromise of the circuit, which could be switched out anyway.