I'm new to the forum but a Stereophile (and other rags) reader/subscriber for almost 20 years. I still have several Mobile Fidelity D2D LPs and they really do sound superb, even on my modest turntable set up. It's too bad they seem to have gone away.
I like many/most of us am still working on continual evolution and improvement of my listening system. Actually, Martin Logan SL3s probably were my first good loudspeakers and with help, I did learn to position them for superb sound, although different (some things better-some things worse) from conventional cone/dynamic loudspeakers (now playing around with a pair of Sapphires but kept the SL3s).
Mark, Colo Spgs