I had the Aeon Noire for a week and really wasn't sold.
The treble really hurt my ears on many songs, even with the "lvl 3" dampening inserts, even as a Beyerdynamic user.

Speaking of Beyerdynamic: I know this isn't a fair comparison, since it's open vs closed back, but my Dt 1990 completely smacks the Aeon 2 Noire in terms of imaging and resolution for less than, or around half the price.