Qc 15 uses a thick memory sponge for the ear and the head beam, so it is very comfortable to wear even if the head beam is made of metal. When I tried it on in the specialty store, I basically felt that I was wearing nothing.
I've been using it for almost a month, and I haven't taken it off because of a headache.
But if it is the pursuit of sound quality, choose ae or oe.
After all, qc series focuses on noise reduction and comfort, and is used by business people. The sound reproduction is high, and there is nothing special about high school bass.