What are best speakers for low powered tube amps?


I am moving to tube amps and am looking for recommendations for speakers to use with low powered amps (under 30 watts).
My budget is about $10k.
banjofan
Cain & Cain Single Horn Ben Loudspeakers - around $5500-$7000 new. You've gotta step up to something like Avantgarde Duos ($19k-new)to be significantly better.
I've been through many speakers and am very happily living with with Exemplar Horns - 103db 8ohm (www.exeplaraudio.com)
If you can live with the size (there's always something!) and aesthetic they are excellent. They actually integrate into my realworld environment much better than I imagined...but still you've got to be about the music first.
For your budget, you could go with Cain&Cain BEN doubles (unless Mr. Cain has fallen victim to the rampant greed infecting the high-end currently. At the last CES, the doubles were around $8,000/pr).
IMO, the Cain speakers simply trounce the Avantgardes in every way muscially important to me.