Purchased these as a spare set to go alongside my Bose A20 (which I love) but couldn't warrant spending another £1000 for a spare/occasional use headset.
Have to say I am massively impressed with the AS2!! At a third of the price of my Bose A20, they are comparable in noise reduction performance and sound quality and are actually significantly lighter in weight.
I now find myself rotating between the two as they both offer a different fit and feel which is great to mix up.