Do it. They are by far the the best IEM i've ever tried and they even beat some of the full-size phones in that price-class.
For the relative cheap price of 400$ or so you get a pair of phones that competes with the 900$ UE10 and blows all the other IEMs in it's priceclass away.
Oh yeah, almost forgot, rockbox is a MUST for these phones, they are very sensitive so they pick up alot of noise from apples crappy FW which is not present in rockbox.