I originally went to a Hifi dealer close to my parent's home with a box of representative CD's of what I like (film music, jazz, groovy,...)
I had originally the intention to orientate my choice to B&W or JMlab,...
So we started the first hour of test (I had a really nice reseller : Audiovox at Mouscron in Belgium which received me from 20:00 to 22:00)at his personal place on a saturday evening, listening to B&W and Jmlab models, which were approximatively sounding the same.
After one hour I decide to at least try the Mission M53 he had in shop, and then came the "sound" ! We compare it to B&W 202 and JmLab Chorus and were quite surprised how clear and pure the sound was restituted. At some moment we put it on a higher end B&W with a "Lionel Hampton" big band,...and it was surprising how all the instruments were present with the "Mission" speakers and some were almost not there with B&W.
At some moment, the vendor even rechecked his connection to the B&W and even changed the plugs, listening to a such big difference.
From what I have heard it appears that with a DENON amplifier with flat sound (we choose this option because my amplifier at home is Yamaha), the sound reproduction with the "Mission" speakers M53 were bright and clear. Piano sessions of Harry Connick Jr were even resonating as if you were on the scene. His voice was divine, cymbals of Lionel Hampton big band were as if you were there.
With symphonic orchestra from "Out of Africa" the difference were not as distinguishable.

Anyway, I came back from the shop with a different order that what I had in thought originally, but approximatively the same budget.

I have not yet received my speakers at home but will definitely keep you informed of my ear's delight.