This reminds me:
1. Another favorite speaker of mine are owned by my Father-In-Law. He was an engineer and something of an audiophile (classical music enthusiast), and he has these big honking Monitor Audio speakers from the early 80s. They look in style and shape very much like the larger Spendor or Harbeth classic speakers.
Wow did they sound fantastic: huge, rich, powerful, and with a very authentic beautiful tonality, like the way horn instruments had that shiny harmonics-rich "blat" and "shine" to the sound that cut through very convincingly, while deep string instruments had weight and grunt. They played electronic just as well. Haven't heard them in years and wish I had a photo so someone could identify the model.
2. As for advances: I mentioned that I still have some old Thiel 02 speakers from the early 80s. I inherited them from my wife, who had them in her condo when I first met her. Her audiophile brother and father picked them out for her for her own system. They were fairly cheap 2 way box speakers, before Thiel went fancy with time/phase coherence. And hearing them at her condo actually wow'd me enough to help get me back in to audio gear.
I keep them around because I absolutely LOVE how they sound. In fact, all these years I've been searching for a speaker that did what these little guys do "but more/better" and I haven't necessarily found it. It's dangerous for me to throw them in my system because they show up what I'm missing (to a small or larger degree) in many of the more advanced modern speakers I own. The main characteristics: A warm timbre that sounds to me more like real acoustic sources, but mostly a density, palpability and "liveness" and presence. The sound of someone whapping a bongo sounds just more like someone right there hitting a solid instrument than through most speakers I've heard, save horn speakers. It seems to describe not only the specific timbre of instruments, but what they are made of: metal instruments sound distinctly of "solid metal," wood instruments of wood. Even many of the more advanced speakers I've owned have sounded a bit more ghostly in comparison.
When I put them in my system my reaction is always "god I love this sound! Maybe it's all I need." However I find after some time...maybe a couple of weeks or longer, I become aware of the slightly more crude nature of the presentation, and I go back to the finesse of my "higher end" speakers.