Tekton Pendragon speakers, for $2.5k nothing else I've heard comes close.
http://www.tektondesign.com/pendragon.html
U.S. made, outstanding customer service, and as good as anything I've heard for under $10k. They are great with all musical genres, everything from Chopin to Gorgoroth. They are somewhat unique in that they are highly efficient without any horn-loading and can be driven to realistic SPLs even with just a few watts, so they are a great match for low-powered tube and class "D" amps; I drive them with a 40 watt tube amp and they will play stuff like "Live at Leeds" and "Weld" at gut-punching levels with no additional sub needed.