If I was going to do a bi or triamped system again, I'd take a look at Scanspeak Revelators.
Audiocontrol DQT is probably the best crossover to run it.
All that aside, I'd put the first $500 or so into sound deadening no matter what you decide on components, because it really does make that much difference.
In the car, or home, the room is at least half the sound.
John C.