Which Used CD Player for Under $1,500?

Audio Research CD2!

Meridian 508.24
or for a Bargain if you can find a Gamut CD1R or CD1S (not the original CD1 unless you have monitors) the detail, spacial ease will red book sound amazing.

I second the Quad 99 CDP. Great player for the money. More musical than my Benchmark DAC.

I've only experienced the MF A-3.2 from the ones you list, and found it rather analytical and lean sounding. Plenty of detail but a little lacking in musicality in my system.

I would recommend the Quad 99 CDP. I switched from the Audio Aero Prima mk II to the Quad 99 and was definitely an improvement in practically all areas. A very good player and has got good reviews.