You may want to try a VTL amp. They seem to work quite well with the Logans and are especially known for removing some of the sterility of the electrostatic.
You may also want to look at changing the speakers versus the amps. I've heard the Aeons several times and they are really nice - for a particular taste - but it appears that their flavor is not totally making you happy. You may be able to get what you want easier by just changing speakers (There are alot of excellent speakers in the Aeon price range.) Your electronics already seem more than capable and, unless their is some synergy problem, I'm afraid a lateral move in electronics may not ultimately get you where you want.
You may also want to look at changing the speakers versus the amps. I've heard the Aeons several times and they are really nice - for a particular taste - but it appears that their flavor is not totally making you happy. You may be able to get what you want easier by just changing speakers (There are alot of excellent speakers in the Aeon price range.) Your electronics already seem more than capable and, unless their is some synergy problem, I'm afraid a lateral move in electronics may not ultimately get you where you want.