In designing my tonearm I had to consider what I thought might not be ideal with other tonearm designs. It became clear to me that the bearing is crucial.
I have not heard a Schroder and I'm sure they sound fantastic, but I'm uneasy about a design which inherently allows the arm to move in the groove's time axis, even if it is by an invisibly small amount.
Of course all arms will allow some microscopic movement of the cartridge in the time axis, but I thought it an important design goal to obstruct this movement as stubbornly as is possible, hence my sideways uni-pivot design.
It seems to me that Schroder's magnetic bearing is a design which, theoretically and on a small scale, permits the arm to move in the time axis, a bit like an air supported linear tracker.
I can't speak for how such arms sound but from first principles they seem to me to be arms which concede what no arm design should.
The Well Tempered arm also allows time axis movement, but only at wow wave periods in the several second range.
I am right now ramping up production of my sideways uni-pivot tonearm, which may or may not be found more accurate than conventional and unconventional tonearms. It is designed fiercely to obstruct time-axis bearing play and flexion, which I think is the key to its dynamic and detailed presentation.
PM me if you would like to know more.