The Sony MDR-V700's will break on you in about a year and a half or two. The swivel starts to crack, and when it does they won't last too much longer. I have two pairs, both with duct tape holding them together

Don't get me wrong, they're great headphones, especially for DJing, but Sony really needs to make them out of a light metal so they don't break. But then I guess people wouldn't have a reason to buy new pairs...
I think Im leaning towards getting some AKG K701's for music production, but Im still not sure what brand to go with for DJing...