If you like the sound of the DM604, include the B&W CM9 and CM10 on your shortlist. A pair of CM9s is right at your $3K price point, with the CM10s (as yet not released) ball-parking at $4K a pair. If you have the room to let them breathe, the CM9s will be a nice "new and improved" extension of the DM604s.
13yr old speaker upgrade
Okay I have a pair of dm604 s3 towers. My first big boy speakers. Incredibly happy with them. But I don't know any better cause I haven't owned anything else. I have the smaller of the two center channel speakers of that B&W series. I have moved into a bigger home. And now have them in 21'x17' room that opens up into a kitchen. I have in cieling surrounds that do the job. And a JLf112 subwoofer. I'm using a onkyo 818 av reciever. Now one of my towers have failed. (Suspected crossover). I want to purchase three similar front stage speakers. Three similar towers. I kinda want to keep my budget around $3000. I am also open to maybe going cheaper on the towers and purchasing an Emotiva amplifier to really drive the speakers to pick them up in performance. Any suggestions??