There are so many speakers out there. A couple questions in my mind include:
(a) Do you want speakers you can move around from time to time without hiring someone? This is an important question to me, because I like to try out positioning things and also have moved my speakers a couple of times.
(b) A speaker with decent efficiency (including an impedance curve without sharp slopes and big dips) will make amp matching a bit easier. The Vandersteen Treo's graph looks really good to my eye.
(c) Tweeter type is critical. I have been very fond of the RAAL tweeters in my Ascend Towers. This speaker is way below $10k and punches above it’s weight. That speaker plus some Townshend platforms would come in around $7k max. They are clean and accurate without being "analytical". They make music.
(d) I am super happy with my Rythmik F12 subs. Easy to dial in and much less than REL.