Curious what people think is the best "value" high end speaker (~5K to 15K)

There is no 'Value' to buying a pair of speakers that are arability built by someone else's listening preferences and environment..... with the hope that they'll fit your needs.

With 5-15k I would measure, or hire someone to measure and design and or build speakers around your preferences, speaker parameters and environment. Its what I do! I don't think Dave Wilson has a 'One size fits all' solution to anything, because no speaker manufacture does!. Custom environments and listening preferences need customs speaker designs!

Sure you could spend 15k on a shiny pair speakers (which are built on the cheap with disgraceful markups), but what happens when someone buys a few drivers from parts-express or madisound for a fraction of the price, and blows your ears off?

A pair of 8 month new JBL 4367 for a little over $8K. 

Sonus Faber Olympica III

consider loudspeaker markup is 4x. manufacturing cost $2500 double for profit makes them $5k now entice dealers so double down again and your $2500 speakers list for $10K. Like Cars, trucks, and motorcycles I prefer to let someone else take the hit and i'll buy used. I get closer to the actual value then. How Raidho and Magico come up with pricing their speakers I couldn't guess.

There are some Vivid speakers listed on agon at a big discount. I think the former distributor. I have their smallest model, 1.5, and love them.
Look up the Soundstage reviews.