Wide dispersion + high efficiency + detail + coherence in a speaker?

++1 mapman! I have a pair of the older Walsh Sound Cylinders (with the 8 inch drivers). In use for 10 + years now! They do indeed sound AMAZING - a wide open 3D sound from anywhere in the room!

I like the JBL recommendation so far.

regarding ATC - wonderful speakers but they come to life only at high volumes.

the efficiency thing is about immediacy! That is the magical word that is important in HiFi !

Coherence and dispersion = Revel. But not efficiency. Efficiency plus coherence maybe Goldenear Triton; anything with the powered woofer (3+ and up). No efficient speaker with coherence and dispersion comes to my mind. Zu may be efficient and quasi single driver coherent but forget dispersion. And frequency response curve is a deal breaker for me. Good luck. If you find a real answer lemme know.

Like previously noted…Klipsch Heresy III…el disperso a mundo.

The Hereseys are a bargain when you look at what $1800 buys these days.   Big soundstage , huge dynamics,  very good imaging, tight bass , clear and clean sound regardless of volume.  Feed them a good source with a good amp and they are hard to beat.

Too bad they aren't held in high regard by most "audiophiles"  , many of which I doubt have even heard them.