Best speaker 3k to 4k used?

I just bought a pair of how demo Silverline La Folias direct from Silverline at a very substantial discount but there's also a pair listed here for $4000 OBO. I haven't received mine yet but a brief listen at the show in the Spring and the great reviews at www.silverlineaudio.com have me convinced that these are terrific speakers for the money at the $8000 list -- let alone at less than half that amount. They could be a bit too much speaker for your room, though.