I’ll just break down my first hand experiences after owning 3 pairs:
1.) The built quality is quite simply the worst I have ever dealt with, hence owning 3 pairs. Out of the dozens of different headphones I’ve owned, the V700 hands down takes the cake on horrible durability - WITHOUT hard usage. The achilies heel is the hinge on the cups, which WILL crack, and in turn, either snap off or loose significant flexibility.
2.) The leather ear pads are hyper sensitive to skin oils, sweat, and other elements. Within about 4 months, you’ll notice a significant change in their comfort and sound isolation since they will not comfortably comfort to the sides of your head. Basically, the pads will loose their “cushioning” and become flat, the leather will be hardened, and eventually crack.
3.) The sound quality is questionable. I base this on the simple fact that they cater heavily to DJ usage, and as such, low end frequency response is what they deliver the most. The problem with having all that low end punch is that it drowns out the mid and high frequencies, creating an overall muddy sound quality which makes listening to music in detail quite a chore.
I highly advise against the V700. When they came out, they were a solid choice, but since then the industry has moved on, and better products have come out. If you have an equally priced, way better alternative to the V700, I highly recommend the MDR-V6 or MDR-7506 from Sony.
If you want quite possibly the most rugged, bad ass, great flat response headphones which can be used for studio or DJ use, and are comfortable as hell to wear - hands down my vote goes to the Sennheiser HD-25. I love my pair, have had them for 6 years and they feel and kick like they were right out of the box.
Thats my $0.02