The one thing I know about the Aeon is it saved a friend from serious head injuries in a crash a couple of weeks ago. The helmet was toast, did it job well. Shame this bloke only had it a couple of weeks.
Happened exactly the same to a guy I know after he bought the Aeon.
Anyway getting back on topic, I do own Aeon and tried the Lazer; you'd buy the Lazer only for the look cause the Aeon is much lighter (almost 100 gramms) and highly probably better ventilation (didnt try it on a hot day).