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
Tvad, you put way more weight to half-hour listening sessions in a hotel room than I do. In my experience, listening to a speaker in a hotel room with equipment that is very different from yours is not very informative. The beauty of audiogon fellow travelers is that they have lived with a particular speaker for long, and they know it inside out. Plus, you can get leads like what suggested by newbee on pieces of equipment that you would have not considered. While I knew about silverline, they never came to mind before newbee mentioned them. So, thanks for your comment, but I still think there is a lot to be learned from fellow travelers.
Post removed 
Zu Essence blows goat. Cheap Ribbon, poor integration.

Devore is great but a little warm and not as transparent for my taste. BUT I have a good friend that builds $15k plus guitars and he loves Devore speakers.

As Tvad said, you need to listen for yourself.
Also consider Coincident Speaker Technology in Canada. If you trust reviews, Stereo Mojo loved the Super Victory. They are $9500, so maybe too pricey for you.

http://www.stereomojo.com/CoincidentSuperVictorySpeakerReview/CoincidentSuperVictorySpeakerReview.htm

I have an older model, the Super Eclipse IIs.

Regards,
Tvad, don't get me wrong. I do listen to a lot of speakers, and local dealers know me well (and I am lucky enough to live in boston, which has pretty good dealers). all i am saying is that system integration is key, and room layout even more. it happened to me more than once to pick up a speaker i loved at a local dealer and then return it because it did not sound right in my setup. that's why listening to others' opinion is an important aspect of this hobby...and one i enjoy too. then of course you have to be intelligent enough to interpret what other people say. the purpose of this post, for me, is to know what speakers made other people happy, why, and in what system. if you think there is little information in all this, that is fine. i respect your opinion. but newbee for instance suggested that i consider a speaker that i did not consider prior to this post. it's possible that i'll have a chance to give it a listen somewhere, and that i'll like it enough to try it out in my system. to me this is useful feedback. that's all.