Standmount speaker suggestion

Alta Alyssa seems to be a leader in the standmount passive speaker class. If I were in the market at $5000 or so, I would start with those and force myself to justify spending more.

The JBL 4349 is a "standmount," but not in the conventional sense. It is heavier than most monitors and the stand is a riser frame that lifts the speaker up about 9 inches. The NPP is at the higher end of your listed range, but new-condition pairs are easily had toward the lower end of your price range.

I am assuming you plan on using a subwoofer.

The B&Ws tend to be lively up top.  But before I you start switching speakers make sure that your room is optimized as much as possible.  If the room is too reflective most speakers will sound a bit bright.

Whatever you do, just don’t buy JL Audio. I personally should have taken that advice I was given here before dropping 11k on broken subs. 

Sonus Faber for more natural musical

DynAudio for more detailed.

Totem for more punchy relaxed.