I am enjoying my E3's the longer I own them, there is no denying the quality and clarity of the sound. As Nomax stated, comparing back to back shows you what these headphones deliver. They cover all frequencies from top to bottom with balance, the vocals are good, sub bass is good, high end is there, and most important they do have dynamics. Snare drums have impact, guitar solo's can soar, strings sound plucked, bass drum and bass guitar are clearly defined. I was not initially wow'd by the E3 because I had been listening to my Audeze LCD-2C for several months, and fell in love with the rich, lush sound (which I still like). However, there is a trade off to rich and lush, it does tend to be a one trick pony. Back to back against the E3 on some track it seems far behind for details and impact.
In the end, you might ask yourself is this headphone worth $2K? Are you enjoying the sonic experience, does it transport you, give you emotion, connecting with the song? I would have to say yes to all of the above, I am happy with the headphones. As far as $2k price tag, well I suppose you could compare them to the experience you might get from $2K speakers, sonically (details) they are better than a set of $2K speakers (e.g. my KEF R3's in a poorly treated room). I just think a lot of people view $2K for headphones is crazy, I being one of them, but that is the price of admission. I know a lot of work went into developing and building these headphones, so the cost represents that.