I purchased Sony MDR-zx310 online and I got it for Rs 909. Its been very long time since I am using this headphone and I am satisfied with the performance and built quality of the headphone. Though it is not as great as the headphones if we go to higher range of headphone, but this is the best you can get in the budget of Rs 1000.
By Design it is very clean built and the headphone is expandable as required to the different head size. The earpads are foldable to make it easily transpotable. The padding is soft and does not cover the whole ear which makes it comfortable to use in summer. It has a 1.2m cable with mic which makes it usable on the go.
Coming to performance, the audio quality is good while using it but you can feel that the audio lacks a bit of crispness and sharpness, sound volume of the headphone is above average.
The product is a suitable for investment and provide good service but there are better choices out there.
On a satisfactory scale I would personally rate it 8/10.