Summary: This can be said as a uncut ruby, why? Because it needs a lot of tempering.
First time I used it, the human voice in my music was muffled by the background track itself but it wasn't to the point where you can't actually hear the lyrics itself (unlike monster beats).
Though it didn't sound amazing at first, I gave it a try, mainly because it was on a discount; if it were at its original price, i would have gone for something else.
Pros: Great sound range, especially bass for ear buds, works well with my iPhone 4 and 5, as well as in my laptop. The ear pieces fit comfortably, although the non tangle cords are a bit heavy.
Cons: Very cheaply made. The weight of the no tangle cords pulled the wiring out of the plastic volume adjustment/mic piece after about 6 months of use. Keep in mind that I don't run, this is simply from sitting at my desk at work. They still work, but they are being held together by scotch tape. If I was going to be jogging or walking with them, or I cared about how I looked walking around with my headphones being held together by tape it would be a much bigger deal for me.
Pros: Want headphones with amazing clarity, good bass, durable flat cord, inline mic all for 70 dollars? These are a must-have. they outperform the Beats by Dre in-ear buds; most any in-ear buds for that matter. they're comfortable. They haven't tangled on me.
Cons: They're optimized for Apple iPhones (inline mic). Haven't used it with my Blackberry, but I've heard that other phones CAN indeed use it, but that's not a guarantee. So, if you're buying it for the inline mic, keep that in consideration