Thanks for the info, guys. OK, I am an audiophile for many years, but completely new with headphones. After 3 long trips to the US in my new job this year, I am about to go crazy. I think I need to research more before deciding. This ETYS thingy, I don't understand how it block out sound, I mean physically, compared to a big cup over the ears. Guess I have to set my priority, sound quality or effectivess in blocking out sound.