Looking for my "last" CD transport

I would not buy a vintage transport as many times the laser assemblies are almost shot and are sometimes not replaceable. I don’t know why you would say there is a limited market for new ones. There are beautiful transports from Jay’s Audio, CEC, Moon, Pro-Ject. Esoteric and many others. I think the choice will depend largely on your budget and geographical location.  

As chayro mentioned, I would look into Jay’s Audio new CDT2 mk3. They also make CDP-2 with an exceptional internal Soekris dam1021 R2R DAC. 
https://www.jays-audio.com/product-page/cdt2-mk3

Good luck!

I agree with @chayro and suggest you avoid used transports. Repair of older units can be impossible because of parts unavailability or - when parts are available - can sometimes be quite expensive. Please don't ask me how I know that.