If money was and was not of any concern when buying speakers.

Money no concern, Wilson Benesch Endeavors.   

Money of concern, I like what I have now, BMC PureVox and Wilson Benesch Arcs.

@bcgator Wilson Benesch is awesome. The Arcs are great speakers. I live near a former dealer and auditioned them back in 2002.

If money no object... not sure, but I've heard Alta Statement Towers at $200,000/pair.

If money an object, no question, GoldenEar Triton One.

TANNOY KINGDOM ROYALS

http://www.positive-feedback.com/Issue64/tannoy_royal.htm

... and 96db efficiency to boot....

If I had unlimited resources for speakers, I would NOT buy a commercially produced speaker. I would bring in a very good designer and have that individual design and build a system (and tweak it in) around my room, equipment, listening preferences and musical tastes. That includes subs and the appropriate active sub filter / crossover for the room, the subs and the rest of the system.

I have nearly that kind of speaker system now.