Searching for the most "accurate" speaker (below 15K)


I’m looking for the most accurate and resolving speakers (budget is <= 15K). Paradigm Persona 3F, Kef Reference 3 or Focal Sopra 2 are some of the options I can think of. Any opinions on how these compare? Should I had other options to this shortlist? The amplifier is the (absolutely extraordinary) Nagra Classic AMP.

Thanks! :)
vermeer
@vermeer my room is 140 sq ft, or 1375 cu ft. (11 x 12.5 x 10) -- a cube is less than ideal, however, listening near-field is actually sublime. Take a look at the golden ratio on Cardas Audio: http://www.cardas.com/room_setup_near_field.php

Here is the room setup guide: http://www.cardas.com/room_setup_main.php

If you can grab yourself a measurement mic, you can run REW yourself to figure out where you start before you invest a penny in equipment/speakers.

https://www.roomeqwizard.com/

Enjoy!
@willemj : totally agree with the dsp ... I've played a bit and it really seems to be the way to go! and yes: speakers cannot be too big and I'm affraid the Sopra 2 may be a bit too much for the room ...
@vermeer Glad you also like the Focal house sound. I know Sopra 2 is not going to get you to the level of Magico Q, but it should be a good match for your electronics. I went through a different path of upgrade. I upgraded my speakers first and found the deficiency of my amp; then I upgraded my amp. BTW, my room size is 20x14x10 (LWH).
If you really want accuracy/transparency I'd second the large, active studio monitors like ATC.  The really big ones are +/- $20k, so budget accordingly.  They also make a bunch of models at app $10k, $15k and $18k

You could also look at some of the less expensive models from companies like Genelec or Focal.

Just bear in mind that not all source material will be flattered by these speakers.  I use powered  Yamahas and Dynaudios in my home studio, but I listen to an Ohm/Rythmik system for playback.