The best "imaging" speakers?

I'll offer Beveridge speakers!

What about the humble Eidolon?

Audio Physic spark ver 4 produced a great image with a deep soundstage in my humble system. The only caveat is they need to be rather far out from the rear walls

The mbl 111s were the best I've heard.

101s are probably as good or better and more dynamic from what I know but have never heard them.

Magico minis were also very good in a smaller room and so were PSB Synchrony series.

OHM Walshes are also very good. mbls had deeper soundstage but not wider. OHM Walsh omni sound levels are physically damped in wall facing directions, which may inhibit soundstage depth but enables them to go closer to walls and fit into rooms easier. They also cost about 1/5th or less than comparable mbls. OHM sound is more coherent through the midrange than mbl 111 due to the single wide range Walsh driver.

Dynaudios and Triangles can do the trick very well also when set up correctly.

I have owned full range,stats,horns,ribbons and countless ordinary two and three ways.

One speaker stood head and shoulders above anything else for imaging-Tannoy Super Gold 10 monitor.Lacking in musicality with a studio monitor cold sort of sound but the imaging precision and depth was amazing.