Full range speaker recommendation

What are the sound qualities are are looking for/ What do the ATC's lack? Are you wanting stand mount or floor standing speakers? Keeping the REL subs? Do they integrate well for you... enough to use with the newer speakers?

The best stand mount speakers I have heard are Wilson Audio Duette. You get incredible sound with these. If you combine these with subwoofers.... I can't imagine the sound. Interestingly there is a listing on Audiogon for a used pair.

Other than that, my vote goes to Tekton Pendragon or Double Impact SE or Vandersteen 2CE Sig III with your subwoofers. I have the Double Impact SE and they are very dynamic speakers with LOTS of bass and punch. My Vandersteen speakers are the 2CE Sig II and paired with subs are very refined, less in your face.