I just got a pair of AKG AV100's and used them on my 3 hour cross country. They are super comfortable but have a very pronounced white noise hiss. I could hear the controllers and other aircraft great, but I'm considering turning them back in to Sporty's for something else. Do all these ANR headsets have some kind of white noise or is AKG alone in that respect? If they all have the white noise hiss I will be going for an in ear replacement.