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

I use subs and new Klipsch Heresy IIIs…subs bought used a few years ago (200 clams each…REL Q150e, Q108 II)…with a well sorted pile of gear behind them, the Heresy IIIs are surprisingly coherant…not beamy, especially for horns (phase plugs do work it would seem), and not too expensive (under 20 thousand bucks…YAY…), but you have to have subs for the anemic bass response. I think "live" sounding is sort of an apt description that could have something to do with efficiency (claimed 99 db), and I mix live shows frequently as a hired Knob Turner so for me live stuff is frequented frequently making me a frequency freak for what I feel is accuracy. Note that as a mixer for live stuff I get to impose my taste on innocent bystanders…hundreds of them at a time…I relish the power and it simply stokes my ego until I spend hours rolling up cables and storing gear…at which time I return to being a regular person.

I should say coherency is in fact about the entire presentation,   timbre, soundstage imaging, the whole shebang.   OHM Walshs exceed at all that but as I described not in exactly the same way say as a good pair of monitors in terms of "pinpoint" imaging.   More coherent overall than mbl  but hard to match mbl in terms of sound stage depth and associated 3-D imaging possible there.

ATC Active 40 or 50.  Active means efficiency isn't a factor.  Lots of detail, coherence, dispersion.  The pro 50 is better but the home 40 may be voiced for home use and sound better at low volumes. 

jbl 4435

As the OP goes:

...
Vandersteens have a tiny sweetspot
MBL are lifeless and are not coherent at all.
Ohms lack in dynamics and detail.

A rather unambiguous way of stressing the importance of efficiency (i.e.: liveliness and dynamics), as well as implicitly downplaying soundstaging/imaging (or aspects of it) compared to other traits - certainly if Vandersteen and MBL are anything to go by in this regard. Single-driver speakers are also mentioned by the OP, and so may point to a desired carrier of coherency here other than liveliness (coherency likely means different things to different people). Options may not be multiple, and some compromises are inevitably to be made. Nevertheless, should be a fun journey.