Since I have the Sony took only 1-2 times on the train and then only in a hard case of wear can not get away with it as well.
------------- POSITIVE:
+ Great bass-heavy sound of Beats Solo level of house, electro and hip hop
+ Ribbon cable (not kinked and tangled not)
+ Ear parts separately rotatable
+ Can be folded very compact (fits well in hardcase)
+ Very stylish in white
+ Very comfortable earpads
+ Easy and platzspaarend
+ Suitable for large heads
+ Single-sided cable
+ Good value for money (40)
-------------- NEGATIVE:
- Is (hardly possible cleaning) even at indoor use very quickly dirty
- Hinges & Joints creak after a short time (even the slightest head movement)
- Earcups dissolve after a few months already -> high wear
- Plug created when stuck often feedback
------------- CONCLUSION:
The negative points are unfortunately so severe that I so can not continue to use the headset.
Since this is so is no production fault, but a massive quality problem, I will withdraw my money and XB500 use my 5years old Sony on.
No purchase recommendation, unfortunately.