Hello longhorn,
While I haven't heard the Aeons yet, will be doing so within a couple of weeks, I believe the Aeons are substantially improved upon in the bass department over the Aerius i's...I also can see an ambience driver located at the back of the speaker..
In the time I lived with the Aerius I's i wasn't satisfied with the quality and general bass performance. Something definitely lacked there. I see the Aeons have a ported bass enclosure as opposed of a sealed one in the Aerius..
Something tells me the Aeons will also be easier to drive than its predeceesor.
I doubt there will be a major noticeable difference re the panels, but with the new 'bass' design and the rear firing 'ambience' driver you should get a better
overall sonic performance with more air to boot.
ML recommend Adcom amplifiers, but if budget eventually allows you should seek higher quality electronics as the Logans in general respond very nicely to partnering equipment and higher quality so to speak. Not that the adcom are low quality, just that 'better' amplification will not be a waste of money with those speakers.
Good luck & hope this helps
AP