Cons: Terrible sound, uncomfortable, large
These have a very thin and dull sound. There is a noticeable lack of low mids / bass, which leave the headphones sounding very cold. There is no sound stage to speak of. I just can't find any redeeming qualities in the sound department. My cheap Senn IEMs sound much fuller than these.
They do isolate extremely well, at the expense of strong head clamping and ear warmth.
Stay away from these. Frankly I'm astonished that these have 4 stars (as of this review) on a site dedicated to headphones. I suspect people want to believe their $80 were well spent.