Well, the Yammie NS-200M's are very, very good speakers. Audiophiles would call them "revealing", or some such thing. With their mirror-image design, they produce great imaging, etc.
Problem is, 90% of my listening is thrift store vinyl - "revealing", highly accurate, or just plain bright are
not desirable assets for a pair of speakers when listening to thrift store vinyl. So, the "east coast sound" AR91's, with their nice tight bass and rolled-off highs will do just fine, thank you very much.

For me, the music, the truly great stuff, is of
far more significance.
Also simplified a bit - after a week or three, the Dual got less and less usage. There's just something
right about the Empire - and the Kenwood Supreme... The Dual was upsetting the "balance" of the system's look - yin and yang, or whatever.
Will continue buying thrift and CL "scores", but primarily for fix-and-sell, to pay for all those LPs; doubt the system will be changing much more anytime soon (knock on wood).