Full Range under $5k-ish

the time has finally come to upgrade my speakers

What things don't you like anymore? There are so many choices out there, I think we need pointers, otherwise, any recommendation will be irrelevant.Two points: 1) matching the sound of yr bipoles will be tricky, unless you go for dipoles such as Linkwitz's Orion.
2) full-range at 5k is a tough call, unless used comes to the rescue

A plethora of recommendations, as usual! Let me add another: ATC SCM 40. Should be around 4k; if not, go for a recent pair of used 40 or 50 in your price range. Stunning dynamics, imaging, and detail (not harsh). Need power, but you already have that.