Best speakers 5k 10 k

" Soundstage and imaging most important. " 

Can you describe the room?

Do you have free reign for speaker positioning? 

I presume the sweet spot is the focus... does soundstaging outside the sweet spot matter?  

Duke

GE Triton Reference.  9K. 

Maybe a coaxial driver if you like imaging.

Vandy 1, 2, 3's and Treo's. And, VLR's for a bookshelf.
Bob

At $5k. - Verdant Audio Nightshade 1.   

At $7K - Verdant Audio Blackthorn 1

pricey for smallish monitors but to quote a reviewer from AXPONA, these are “little speakers that deliver big sound”

My speakers, I know so am biased but I have competitive benchmarks and am not an idiot.  If this is your budget, I think I offer a pretty spectacular value as no one is producing composite (Nightshade = Fiberglass, Blackthorn = Carbon Fiber) speakers in this price range and the cabinet makes a huge difference in allowing the speaker to simply do its job.