How many turntables priced at or around $50,000 have you owned? How many turntables around $50,000, either owned by you or a friend, have you set up, listened to for many hours, and compared side by side with another turntable? Just because you can’t afford them doesn’t mean they are unnecessary or redundant.
Here is a list of the turntables I have directly compared in my own system after having set them up with same tonearm and cartridge:
SME Model 10 directly compared to SME Model 30/12 both SME V and SME V-12 arms with AirTight Supreme
Technics SP10 Mk 3 (owned by friend) directly compared to SME 30/12 with SME V-12 and AirTight Supreme
Denon Dp-47f compared to SP10 Mk 3, different arm cartridges
Micro Seiki SX8000 II directly compared to SME 30/12 with SME 3012R and vdH Colibri
Micro Seiki SX8000 II directly compared to American Sound AS1000 with SME 3012R and vdH Colibri
American Sound AS1000 directly compared to AS2000 with SME 3012R and vdH Colibri
It is not an extensive list, nor do I have much experience with different tonearms in my own system. What I did learn is that speed accuracy and consistency is not as important as the resonance management of the turntable. All of the turntables listed above have decent speed as measured by the Sutherland Time Line and various strobe disks, and later the Roadrunner tachometer. The direct drives and Micro and American Sound tables have superior speed control compared to the SME with their stretchy belts. With the SME tables, the heavier and better suspended, the better the sound. With the Micro and American Sound tables, the more massive the better, but it all comes at a cost of weight and price.
EDIT: I owned all the turntables except for the Technics SP 10 and the American side AS 1000. I also directly compared to TechDAS Air Force one to an American Sound AS 2000 with multiple arms and cartridges in the same system belonging to a friend. With every iteration, the AS 2000 sounded better - more grounded, more solid, more nuanced with more energy and information. The TechDAS sounded damped and dull in comparison. I would get the TD Air Force three premium over the Air Force One.
I also directly compared the American Sound AS1000 with upgrades to the new American Sound The Absolute Nothing in a very good system with the same arm and cartridge. The latter took the presentation to a completely different level. That turntable is a real achievement but very expensive.