I’ve found that imaging is mostly a factor of proper setup, proper room treatment and overall room acoustics. Most speakers will image if the above are addressed correctly. Yes, the speaker plays a part after that, but until you have those other 3 set right you can’t really compare one speaker vs another to say which is "best".
Good to read common sense and experience in few lines.....
I will add mechanical resonance controls, and electrical grid house controls to help better focusing of the imaging....
I call that 3 embeddings ways for any audio system....More important than even the choice of electronic components sometimes...
There is many brand of speakers that can produce imaging but do not or do it wrongly because of insufficient controls not only of the acoustics but of the noise level of the house and of the vibrations-resonance problem....
We can all drop names of speakers but the question is how to make them imaging?
:)