Any experience with these turntables?

Thinking about getting my feet wet again with turntables and analog audio. A new friend of mine in audio, who works on these audio kits has a variety of TT he wants to get rid of. Has anyone had any of these? Which vintage model might yield the best fidelity?
AR XB (needs mat and cartridge), Sansui SR-4050C (mint condition, but needs auto off switch fixed) Marantz 6100 (pretty clean) and lastly Garrard Zero (fair condition). All tables would need a new cartridge I would assume.