Pros: Neato blue color, great build quality, comfort, decent sound for closed phones.
Cons: Uhhh... they're really, really blue... dissapointing bass response
Sound is only a little better than average at best.
Treble: Analytical sounding and a little bright for my tastes, a little fatiguing, liquid though lacking absolute detail, some air, compressed sound stage.
Mids: On the thin side, but fairly detailed and liquid, lacks defining punch and rich tonality. Voices sound good but lack that palpable richness of say, HD 600's.
Bass: For headphones the size of sliced grapefruits these surprise with their less than ideal bass extension. The bass they do have is decent though, not boomy, well controlled but not particularly detailed.
Overall sound: Well, I gave them to my girlfriend and she likes them well enough and uses them at her desk job.
They're quite comfortable, perfect for long listening sessions.
They isolate pretty well.
They look ridiculous after you get over the wow, shiny blue metal phase.
After factoring in the superb build quality, high comfort, and decent looks if you like the color, these are not bad for $170. I'd hesitate to pay more though.