Yes, this thread is 6 years old, but I think the search function is there for a reason so I decided to use it, instead of creating a whole new thread. Since these cans are so frowned upon here among the audiophiles there are pretty much zero (0) objective reviews on them. This has driven me crazy, so I'll type up what I have to say about them in a semi-objective review. I'm not an audiophile, but it's not only audiophiles who use headphones (or this site, for that matter).
I'm listening to these cans right now. They don't hurt my (small) ears and I'm not at all affected by how tightly they clamp (average head size). However, I can see how they would be very uncomfortable to a person with larger ears or head, as the grip is very firm. The cups are very shallow.
After nearly a month to burn these in, here's what I've pulled from them so far. The bass in these is HUGE and I wouldn't call it perfectly accurate but it is punchy and better than any sub 70$ cans I've heard. Very good for beat matching in a loud club. The mids and highs are recessed to the point of my girlfriend (totally inaudiophilic) instantly noticing how muffled they are in a before/after eq test, so I always try to eq them for best performance. There is a muddiness in the .5khz-2khz levels, and some sibilance. The sound quality is not exactly quality but they may satisfy bass heads. Honestly, tho, if you're coming from something like skullcandy or just some cheap on-ear phones you'll likely not be disappointed with spending the money on them (I was coming from Behringer HPX2000 and these blow them out of the water). Do NOT spend more than ~85$ on these. There are better cans on the market for that price. It may not sound like it, because I'm trying to be honest here, but I really actually do like these headphones. For 76$ they sound good and they do what they were designed to do. They look slick, too!
Isolation is good. I can hear the people around me when there's nothing coming through them, but once I start listening I'm in my own little world. Nothing gets out or in.
I hear these have an issue with breaking at the swivel joint (which I certainly can imagine just by feeling the mechanism) but I also heard that they reinforced the hinges in their newer models (which this is). The reinforcement being unconfirmed, I may or may not be able to comment on the durability in the coming months! I've read that some have had the same pair of these cans for a decade or more, and then some who break them after a month... so I think it's more telling of the individual than the equipment.
I'm currently looking into replacements such as AT ATH-m50 or Xone XD-53... maybe HDJ-2000 if I'm feeling loose lolz. None of these are the most accurate or offer the best sound stage or anything like that... but these are actually portable and affordable! I'm into the EDM scene mostly, so I think my choices would work well for listening applications in that genre as well as functioning in the club =)
Edit: Just found a nice and easy modification which (to my ears) significantly improved the mids and highs of the v700s. Under the ear pads are foam disks and canvas disks. I removed the foam disks and left the canvas disks. The "muffled" quality I was talking about was an actual muffle rather than an issue with the speakers. They're even more comfortable too! This modification trades off a little isolation and sibilance for a greater perceived range, slightly more comfort (to my small ears), and increased sound stage.
Haters don't hate! Oh, first post btw =D