I well-remember the magic of listening to Dunlavy's in Colorado Springs years ago in The Sound Shop, at a friend's home with IVs, and listening with John Dunlavy and meeting him (a wild guy) in his CS facility. They were very special but a tiny magic zone. For generally superb musical quality but one-person listening, they might get on my list.
As for knowing if I can really hear time and phase coherency, I'm not real sure of my ears unless someone told me what to listen for. I might be able to with a bit of learning.
I do know I am very sensitive to frequency adjustments and much prefer the sound of a room that is bass-corrected and very minimally DSP processed to yield a flat frquency curve with care to time and frequency. A 'repaired' room always sounds cleaner and better defined with no loss of bass intended to be there originally.