Sorry, I got prematurely cut off.
The 4 th is a Mitsubishi DA-F20.
They rank in my opinion in the order I’ve stated - the MR 67 having clearly the best sound, tubey warm midrange, great death and clearly the winner when it stays on station; the accuphase is the best in terms of reception accuracy but has a leaner sound; the Sansui TU-9900 is not far behind the in all respects and the Mitsubishi a class below the other 3, but nothing to sneeze at.
i have also,owned a Magnum Dynalab 108 and a Sansui TU-919,
but preferred my top 3 to all the others, with the Macintosh MR 67,exquisitely tuned by Audioclassics, still the undisputed king.
But I would love to try the Marantz 10b........