I use the devil especially than the headphones on my digital piano when I do not want to disturb the neighbors at night, because the open design does not matter. The sound is very good, the comfort is good, I did not wear even after prolonged pressure points on the pads and the workmanship is great.
Even when operating the iPod or on my phone, I can not complain, on the train or on the plane I reach but at a closed headphones.
I can really recommend the Aureol, if you get along with the open design!