I would second the DB99. I think it is one of the better speakers out there, period - and very efficient for tubes or lower powered solid state, but tubes are a dream with them. At least listen before choosing something else if you can.
Von Schweikert VR4SR Loudspeaker
I m in the process of buying the ebony VR4SR which retail for 10K. Will be driving it with a Unison Research S8, SET with 24watts. How is the speaker? Is my integrated amplifier good enough to drive it? I m using Transparent Reference Speaker cable, power cord and interconnect. Accessories include BDR cones , Exact Power Conditioner and Transparent PIXL. Happy Listening.