Best 3-way or 4-way speaker under $15K

Dunlavy V are a 4 way speaker. If you can handle their size they are one of the best. Audio Video logic has a Demo for 9K. They retail for 15K. I auditioned them with B&w and Vandersteen's. Dunlavy's walked away in sounstage and Dynamics. Also check out Wilson 6

I would definitely recommend the Nautilus Series, especially the 801 if you have the room or the 802. I would also recommend the Revel Salon. I own the 802's and love them. Other speakers mentioned here are very very good. I will depend on your musical taste.

How about the Proac response 2.5? Yes, I know its NOT a three way speaker. However, they sound wonderful, have the seamless presentation of a two-way, image like monitors, and give you extension all the way to 20hz. Best of both worlds.

Aerial 10t's, sound great, need lots of power and good cabling, components etc. Worth hearing at 8000$

I am personally in love with the Vienna Acoustics Mahler speakers. Retailing at about $10K they just play everything else that I listened to in the same price class away. Detail, clear mid range, nice tight bass, look great, sound exactly the way I like. Can't wait to get my very own pair :)