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
Don't buy anything without hearing the Audio Note AN/E Spe and the Tonian models.

DeVore are very nice speakers but not really HE, and they don't sound like it. Yes a 300B will drive them but they do not give the dynamics and nuance of an HE speaker.

PHY, Supravox, and Ferting WB drivers on a simple OB can be incredible.

Beauhorns are very nice but not available new - very rare.

Fostex back horns (Cardersound, Cain) are certainly worth considering. Many prefer them to the far more expensive drivers. They are not as detailed but frequently win in the fatigue department.
Folks thanks for the many suggestions. I notice a consensus around Tonian models. Also, Devore seem to be liked by most, together with the Silverline models. This looks like a pretty good set to explore. Too bad the local dealer only carries Devore. But I will find ways to try the others.

Paulofbrecht, I am curious about the beauhorns. You seem to have tried them. I will take a listen to them in a few days (a local guy owns a pair). How do they compare to, say, the Tonian classic 8.1? Based on what I've heard about them they are technically more flawed than other HE speakers (coloration and limited extension, both high and low) but they have a magic that is addictive.

Thanks again. This is really helpful.
Musicfile,
Yes, they are clearly some of my favorites

I forgot to mention the Audio Note earlier...I have owned the ANE/SEC silvers and they are terrific speakers as well.
Keep in mind that AudioNotes were designed to work in the corners of your room, if that's an issue for you...
Will Tonian appear at RMAF anyone?