The Philharmonic 3s are only $3.5k new and they probably would meet your requirements. One guy has highly reviewed and respected speaker that are $22k and $15k. He likes his Phil 3s better. The Phils have the most natural midrange that I have heard. The treble is not rolled off but it is smooth as silk so no fatigue. If you can stretch it to $8k, then the Salk SoundScape 8s will buy you a slightly crisper midrange, higher quality finish, killer bass, ability to play a bit louder, more efficiency, smaller footprint and totally dead cabinet. They are both hybrid open baffle speakers so you would need at least a couple of feet behind them to the wall.
Bob
Bob