Summary: THIS IS MY FIRST EVER HEADPHONE REVIEW. EDITED SLIGHTLY, PLEASE SEE FURTHER COMMENTS -->
I recently bought a pair of these, and this is the story as far as I am concerned. Experience base goes from Etymotic's, through the Shure 535's and IE8's (Although I suspect my IE8's are knock off).
I went to a high end store where they would let me listen as they had spare tips etc etc, and paid £595. They are the IQ9 model.
Pros: Everything about them aside from the Cons, Sound Stage excellent, Detail Amazing.
Cons: Getting the right seal, if it isn't there, or you can't achieve it, then they sound awful. Very recessed lower fequencies