Pros: Bass presence, iPhone compatible mic available.
Cons: Price, overall sound quality, comfort.
At the MSRP of $99 or at the discounted price of $79 there are many better options out there. I bought these before I did any research, on an impulse at the Apple store.
The bass is appropriately enhanced without being overwhelming. Decent extension but not very quick or precise. The mids & treble are lacking refinement, while they are clearer than many earphones, they do not produce enough quality to justify the price of the set. The treble is very harsh & sibilant, I couldn't listen to these for very long without feeling fatigued. They aren't specifically comfortable but not especially uncomfortable, like many of it's peers they don't sit flush so they are impossible to sleep in comfortably. There is no real separation & doesn't appear to be any tuning for soundstage, the sound is where the speakers are, plain & simple.
The mids & treble make this set very overpriced compared to the competition in the $50-100 range. The sound signature is extremely poor, they aren't sweet or bright in any good sense of the words, harsh & sharp are much better adjectives. I would avoid these headphones for any price above $50 & might even argue that $50 would be better used saving for a better IEM.