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.