Tannoy dual-concentrics blew me away when I first heard them, and basically converted me to a Tannoy owner for life. I presently own 5 pairs! As a young man I actually transitioned over to speakers from high-end headphones; the Tannoy DC’s coherence and musicality, versus multi-driver speakers, is what instantly won me over.
I’ve listened to other high-end conventional speakers as the opportunities arise, and they have certainly gotten a LOT better in the past 10 years IMO. I do quite like Magico S series, and all 3 of the Acora Acoustics models. The Von Schweikert VR-55 Aktive and Focal Sopra 3’s are also quite enjoyable, but by the same token the bigger (and very expensive!) models from both of these makers haven’t really impressed me yet.
It’s been almost 20 years, and Tannoys have become firmly seated as my audiophile "home base", so I’m not sure there’s much room for that to change anymore. But I also recognize Tannoys are not for everyone - you either "get them" or you don’t. Also Tannoy had a couple of models that really sucked, IMO. Also individual units could be miswired (like a set of used Glenair 10 I bought - good god did they sound like sh!t until I rewired them correctly), or may have had a driver wire knocked loose (they use very cheap clips) - early on, the woofer of one of my Canterbury GR’s became disconnected during loud playback (easy fix with a set of pliers)! So if it sounds bad, it may have been caused by one of these issues rather than the design itself!