Best speakers in the 3000 -5000 range

Is it simply time for a change, or is something lacking in your B&Ws?

Magnepan 3.7R's are $5500, just a bit above your range. The hegel is 220 W into 4 Ohms. That might be enough to drive the 3.7's. They are worth considering if you have the room to set them up properly. I spent the best part of a year auditioning speakers, and the Maggies beat everything I heard from Dali, Dynaudio, Areial, Sonus Faber, and Theil. Only the Magico V2's and Wilson Sophia III's at about 16-17K arguably bettered the Maggies. I just couldn't justify the price differential so I ordered the Maggies.
My living room is my listening room, and my last two speakers have been Maggies. I really wanted to try box speakers, and hoped the Aerial 7Ts would be my next speaker. They weren't close to the Maggies, and I heard them in the same room with the same equipment on the same day. Don't buy anything in the 3-5K range until you have heard the maggies.

If your amp doubles in wattage (or close to it)at 4 ohms vs.8 ohms, then it has enough current to drive Magnepans. The entire line sounds more like a concert stage than any box speaker and are very tweakable. This is a good time to get 1.6's or 3.6's used since the 1.7's and 3.7's just came out and many Maggie lovers have upgraded.

Dali Euphonia MS4

If you don't have the space or power for maggies (which I agree are nice) you might want to consider Harbeth C7's or HL5's. Just depends on your personal tastes and situation.

I'm a big Harbeth fan.