In case you've never been to a concert, let me remind you that - unless you're dealing with an uninspired live performance by a poorly recorded artist - it rarely sounds like a recording does. Live shows are great because of spontaneous musical creativity. Recordings are great because they offer a polished product, something painstakingly worked on to be as close to perfect as possible. There is no place you can stand in the midst of performing musicians and hear every touch of finger to string on a bass and every snare rattling while still getting an immediate piano sound or an intimate vocal. The idea on a recording is that a balance has been struck to, to the best of an engineer's ability, give you the best possible listening experience. The purpose of a recording, binaurals excepted, is not to accurately reproduce the experience of hearing a performance, but to let you hear a performance the best possible way (in the creator's opinion, of course). It is then not a matter of reproduction (unless you want to reproduce the sound engineer's experience, but I hear that they intentionally use uninspiring speakers) but a purely subjective matter, in which case you want to extend (or correct, subjective subjective) the sound engineers effort and find a headphone that, to your tastes, provides the best possible listening experience.
Binaural recordings, though, are I believe supposed to reproduce as accurately as possible the experience of being present as musicians perform, but I don't think that this thread is about finding the best cans for binaural recordings.
Just my tuppence. Sorry for the obscurity of the prose.
Cheers
Kai