A turntable on its own should provide rock steady speed (and adjustment for such if needed) and very low mechanical noise. The rest is up to the arm and cartridge. When buying a turntable with its own arm, more likely differences would be mainly in the cartridge used. If you spend a lot more on the arm, you might get some improvements whether truly audible, maybe. The whole vinyl thing is overrated IMO, though....when cd came out I switched over fairly quickly. Haven't bought new vinyl in 30 years, altho I still have my vinyl collection and Technics SL1200mk2 (and maybe it's tenth cartridge or so).