The Shure V15 V with a Jico SAS/B stylus VS The Soundsmith Hyperion MR and Lyra Atlas SL

@lewm  My assessment of the Tympanies matches yours. I also took a foray into ribbon speakers with the Apogee Divas, also a big mistake. It was back into Acoustat 2+2s until the Sound Labs came along. 

You mentioned being fond of live performances because of the dynamics. The only difference between us is I chased those "dynamics" using subwoofers. Once you realize (get hooked on) the benefits of subwoofers it is a very short hop to digital processing. You are already toying with the idea of subwoofers. I know for an absolute fact that if you listened to my system for just 15 minutes you would be 100% onboard. 

I’m on board and have been for years. I just don’t want the extra clutter and complexity. Whenever I get close to pulling the trigger, my inner self says, "Nah. My Sound Labs do excellent bass, though I would not argue that very low bass could be better. I just don’t care enough. My Bev system has better bass, as good as I could want. In my own opinion, a system I have heard locally with stacked Quad 57s that have been modified by removing the electronics and direct driven from EMIA tube amplifiers with only one transformer at the interface outperforms my long time friend’s Acoustat 2+2s by a long shot. But with those mods and upgrades to the Quads, this is no surprise. I think that Quad system may also incorporate subwoofs, but I am not sure. The owner demoed the system at the Capital Audio Fest (coming up soon) with the stacked pair. At home he uses stacked triplets. If he is there this year (along with Dave Slagle his close friend), I will report.

I did not quite say that I am fond of live performances "because of the dynamics".  I said that on the frequent occasions where we attend live performances, what is striking in comparison to any home audio system is the dynamics of live music, as opposed to pinpoint imaging, which was the subject of that discussion.  I once had a saxophonist come to the house and stand between the two SL speakers while playing a tune in our living room (aka, the listening room for the Sound Labs). Well, actually she happened to be visiting and had her sax on hand and was kind enough to play for us.  That was informative.

@mijostyn 

Have you managed to try out the recommended capacitive loading ( 250-300 pf ) on the Shure yet. I am interested to know the results.

Re Tympanis - I had a pair traded years ago, spent more time repairing them than listening. Fortunately found someone that thought they made very good screens for their parlour.

@lewm stated "Hearing is believing ".

I stopped taking description of Audio Equipment's end sound as a guidance many many years past. I have been much more interested in being able to encounter sound and form my assessments, as a result of the impression that had been made. 

Isolated / Insular Listening experiences leaves an individual quite limited in their experiences of sound being produced from recorded music replays.

My friend who tinkers with the 57's will be informed of the design for Quad 57 mentioned by @lewm, maybe I can hear one, especially as I donored 2 x 57's to support their own array method used.     

Now that I have a powered subwoofer between my Quad 2905 speakers, I realise I could have got away with 2805s (or their replacements with fancy wood trim, the 2812). The trick has been to adjust the level of the subwoofer such that I cannot tell when it is switched on, but can tell when it is switched off - I know that makes little sense, but perhaps you understand me. It is like adding, say, cinnamon to Italian savoury dishes, not so much you can taste it, but it still adds something to the flavour.