mirolab asks a good question.
I'll probably be upgrading to D4.1s ... however, Rockport's are also marvelous and I really should audition these as well if I'm going to be spending that much money. TIDAL sounded great at Axpona so a trip to "The Voice That Is" may be on the cards too.
What is equally important to me is knowing what NOT to audition. Horn speakers are great for some but not for me. Wilson's are too bombastic for my taste and several other brands failed to excite quite as much as Rockport, Tidal and Raidho.
What did shock me was how good Graham Engineering speakers sounded. A 50-year-old BBC design ... old for sure, but they were wonderful. Those clever BBC engineers knew what they were doing back then.