Have been using these headphones since 2years almost.very happy with with the performance. And of course the price at which it comes is very reasonable considering the sound quality.got it for around 650 rs during amazon flash sale.otherwise you can buy these headphones at around 799 rs.
The treble and bass is very well balanced.although we can change the sound settings through the phone.you can hear it at the maximum volume and it will not sound irritating nor will it affect your ears.
I am using these headphones with asus zenfone max and moto g 2.
The quality of the wire is really good I feel.but nowadays there are flat wires coming in some of the headphone brands which are less likely to entangle.sennheiser can make such changes too.if the r & d department understands the needs of the consumers.
Another drawback is that it does not have a microphone.so you can not use for making calls.although you can get your phone closer to your mouth and speak but still if a microphone is provided it is going to be the bestest headphones in the market.