vintage turntables?

"I bought a new SOTA Cosmos mk3, had it upgraded to a mk4. It still couldn't hold a steady pitch compared to Technics SL1210MG5 (a current turntable in production) for 1/10 the price."
Youve mentioned this in several posts in the last few weeks.
It should be pointed out to people unfamiliar with Sota that your experience with your cosmos was truly rare. Having owned almost all the decks in there line up for many years and having discourse with many Sota owners I would comment that Ive never heard of or had any speed problems with their decks. Its unfortunate that you had a bad experience and I share your enthusiasm for technics decks but your experience was remote and in fact could happen with any deck as a matter of fact I can show you a 1200 mk 2 with speed drift, it happens. Im not inditing technics for what I know is an isolated occurrence. I can also say with assurance that after spending many hours comparing technics decks to the Sota that although the technics are remarkable machines they are not in the same league sonically as the Sota.
Just an alternate point of view

"Consider this, that KAB power supply is a $250 upgrade. I think more engineering effort goes into designing a power supply than a motor mount." As a small scale manufacturer I can tell you $900. doesnt go too far so that may not be a good comparison. However your point is taken, the KAB modded technics gives enormous value. In Sotas case getting that last little bit of performance in anything consumes an exponential expenditure of resource compared to return look at performance cars for example. We find that last little bit of refinement can be 50% or more of the final cost and some customers cant justify that. But if you want to take anything to the extent of its potential that last bit is gonna be expensive.

Nobodys mentioned AR certainly a venerable vintage table along with Linn, Garrard and Thorens.