Pros: Bassy, great build quality, interchangeable parts, looks great, customization.
Cons: Sound, uncomfortable, cheap cables,
Overall these are good portable headphones with great build quality. The sound, however, is where these are suffer.
I liked the idea of picking a custom headband/wires/driver to match your style.
The overall sound presentation is very congested and muffled. There is no clarity or detail. The bass, though, is fairly good. Plenty of mid bass and subbass for all the bass-lovers. The midrange is recessed, and so are the highs.
Get these if sound is your least priority.