K-712 Pro : Jesus christ

Pros

Natural and neutral sound

Extreme comfort

Wide soundstage

Cons

Not too exciting

For professional use

Open-back (can be a con for some)

My Personal Opinion:

These are the best headphones I have ever heard. By far. Because I am a home studio user I don't have the means to use monitors for mixing but these are perfect. I mean they have absolutely no competitors in this price range, and for me they blow HD800's out of the water too. If you ever get a chance to listen to one of these, do so and you'll know what I'm saying. I have been using these headphones for the last 8 hours non-stop and it feels like you are listening from a monitor. The headphones are so comfortable that you just put them on and forget you have them on. It doesn't have any heat issues and this is coming from a person that sweats anytime he puts on a leather pad. These are just perfect.

The downside is that if you are going to use it for normal listening purposes, the headphones are so good that you can hear everything in a song; meaning that if you are listening to a badly mixed song that you normally enjoy, you may feel a bit dissapointed. Other than that, it doesn't have any flaws whatsoever.