I'll be the first to pitch for planars and ribbons... If you want the singer in the room with you. I am extremely partial to the Apogees. The Diva will cost you a grand less than you plan. The Duetta about a third. With the BAT plus an Apogee you will be instantly placing your system at it's 99 percentile sonic potential at any cost.
OK, best speakers for 2500 USED......
That would be about $5000 new. I am running a BAT VK-200 amp, a BAT pre (yet to be purchased). I value an engaging musical quality, 3-D imaging, "speed", like the voice is in the room, jumping out at you. Let the suggestions begin......thanks, this board is great, I have learned a lot about high end......Mark