Good Morning, Infinitydreams,
With any of the cameras listed, condition of the specific one you get will naturally be an important factor. Repairing and/or refurbishing isn't cost-effective unless you can do it yourself. I have three of them, the Canonet, the Ricoh, and the Konica. My preference is the Konica Auto S2, but I see no reason not to try any of the others.