Best high-efficiency speaker under 10K


I have never played in the high-eff speaker / low-powered amp space, but I've read so many things that I would like to give it a try. I own an EAR 859 integrated amplifier, De Paravicini's interpretation of SET. It's pretty incredible, especially if you consider its price tag. I am now in the business of choosing the right speaker. I listen to a lot of jazz and vocals and opera. So, I can do without the sub-40HZ frequency range. I would like to stay between $3K to $7K, certainly below $10K. Here are the options i am considering:

1) Zu Audio Essence.
2) Beauhorn Virtuoso (single driver)
3) KCS louspeakers (the model that uses the SEAS exotic driver)
4) Devore Gibbons 8
5) Living voice Avatar

If I had to choose right now, I'd go with the Beauhorn, but I know their limitations.

Any thoughts/personal experiences with the above or any other speakers in this range? Thanks.
ggavetti
The Vaughn Cabernet and the Coincident Technologies Reference Extreme both have great reviews that make them sound very similar. They also seem to be mentioned together in these forums. Could somebody who has heard both, make a comparison? The Reference Extreme is much more expensive. Is it that much better?
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The Coincident Pure Reference and the Vaughn Cabernet are in two different leagues. As nice a speaker the Cabernet is,it doesn't nor would anyone expect it to be as good. It is not a bargain Pure Reference.The Super Victory would be a better comparison with the Cabernet.
IMO

Regards,
Classic Audio Loudspeakers, T3.4 Project Field Coil, If you could push your budget. The Music Floats in the air.
Best high-efficiency speaker under 10K

Being high efficiency, and easy to drive more times than not, go hand in hand with some form of colouration.
I can think of one with high’ish efficiency and easy to drive, that would be the some of the TAD speakers that to me sounded uncoloured.

https://youtu.be/Fai7Pnw1c-Q

https://youtu.be/swgPaVlE-0E

https://www.stereophile.com/content/tad-evolution-one-loudspeaker

Cheers George
You can have audio nirvana for around $3K with Spatial Audio Hologram M3 Turbo speakers.  They are the best speakers I have ever heard under $10K.
Charney Audio Companion with Voxativ drivers or for less $ the Maestro with the Omega RS7 driver.

Exceptional design, build, and oh the sound!

Charney will change your mind on what a single driver speaker can do! 
I have owned a pair of Decware HDT single driver floor standers for four years.  I had always wanted single drivers but when I first started looking the prices were too high.
A friend had a pair of Decware amps producing about 2 watts per channel and I saw some speakers on the web site.
I own a pair of Wright Stereo Co. 3.5 Mono amps powered by 2A3 tubes and are 3.5 watts per channel.
Steve Deckert of Decware designed his High Definition Tower, transmission line speakers about 10 years ago and the design is brilliant.  I had a pair built and they are now available through Decware for $2695.00 a pair.  The speakers are 96db efficient, use Decware modified Fostex 206 drivers under the FR-8 model number.  The speakers are definitely worth looking at and all of the info is on the Decware site.
rodge@What is  price Charney? Is really nice speakers, I listen in NY
audio show 2016
My new Spatial Audio X2s are just getting broken-in.  Lovely.  The easiest-listening speakers I have ever experienced.
I'll give you few options. All of these high efficiency speakers I've lived with and has been highly satisfied.

1) Daedalus Ulysses: So musical. So rich and yet detailed. Very easy to make them sing. Good for every genre.

2) Daedalus Athena V.2: Same as Ulysses. But little bit more coherent but doesn't dig as deep as Ulysses. Extremely room friendly. The longest I've ever owned of any speaker.

3) Pure Audio Project Trio15 Voxativ: Highly customizable and tweakable. Bass is punchier and image is oh so bigger, more detailed than Daedalus. However, requires more careful placement and more effort to make it as musical as Daedalus but totally possible. Very high value. Good for all music.

4) Pure Audio Project Trio15 Horn1: Currently my reference speaker. Please check the review on Dagogo. Doug is spot on this speakers.

All of them are SET friendly and I play a lot of rock music using my First Watt J2 or Line Magnetic LM 508 SET amp.
Tekton Double Impacts are a 4 way 98db/4 Ohm load floor standing speaker.  I drive them with an 8wpc 300b SET, but many drive them with 2-3wpc 2a3 amplifiers to satisfying levels.  They compare to speakers much more expensive than their $3300 price, but if you want to spend more you can always step up to the Double Impact SE for $6500 or the flagship Ulfberht for $12K.  The reviews confirm what many owners already know which is that these speakers are giant killers and they present the most coherent top to bottom wall of sound you likely will only find in the best electrostatic or ribbon/planar speakers.  They are a 4-way design using a novel circular tweeter array that acts as the midrange with the center position tweeter producing the highs along with 2x ported midbass drivers and 2x ported 10" bass drivers. There's an Audiogon group that's very active with countless reviews by owners along with a world wide group on facebook. Just search on Tekton Double Impacts.   www.tektondesign.com  
Without a doubt top of line reflector from reference 3a...call tash owner ref 3a. Its the sound of raidho for one third price. 
@bache Sorry forgot to hit the notify button. Here is a link to Charney audio with current pricing.

I concur with rodge827. As a new Charney owner I am amazed! Give them a listen/purchase if you can.