+1 For me, ANC is literally messing with my mind. My brain knows those frequencies should be there, but my ears aren't hearing it.
Frankly I don't understand the appeal of cancellation over isolation. If people are really that ape**** about silence - and they're willing to spend that kind of money - then a pair of customs ought to do the job. And if they're really fanatical, they should just pick up a pair of Howard Leights and get it over with.