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

I heard the Kanta 3 at a local dealers and very nearly bought it myself I was so impressed with its musicality and clarity, that even handled my 70's rock! That's a first for any focal speaker before it in its price. 

Three or four of these posts had excellent suggestions. What sounds great to one set of ears can be painful to another. Once you have listened to everyone's idea of nirvana you will know which way to go!!

OP, the 3 best recommendations from above, that I recommend, are the Klipschorn, some of the JBL models, and the Volti Allura speakers. I own Klipsch Lascalas ( horns ), supplemented with powered subwoofers, as I do not have corners. Why do I say this. As horn designs, they do not exhibit compression ( hold back dynamics ), and I have determined, " for me as a listener ", this is vital in the creation of a realistic sound scape. The 3 Tekton models mentioned, based on everything I have read ( I have read everything on them, but never had the opportunity to listen to them ), seem to be excellent as well, with dynamics. Horns are not for everybody, nor are any of the above suggestions. I believe you stated somewhere that you would like to " open up " the speakers near their max ( listen loud ). Tone, imaging, coherence, all of these things are important, but without dynamics, I get utterly bored. I am getting it all. Yes, I am biased, but all I am saying, is that " I have determined what I like ". Many of the recommendations above are great, but only you will be able to determine what you, and, your ears, like. As a retired audio consultant ( and current audiophile, music listener and hobbyist ), I recommend for you, to take your time, and listen to as many speakers as you can. Keep in mind, also, that whatever speaker you wind up living with, you will likely need to do some room treatments, to extract the most from your speaker purchase. Trust your ears, and no one else's. Take a few recordings that you like, are familiar with, but at least one or two " audiophile " recordings as well with you. Best of luck to you. Enjoy ! MrD.

Rega RS 10s are remarkable speakers if you can find a pair.  Extremely detailed fine textured sound and they give correct tone and weight to instruments such as cello and double bass and clarinet.