Can you keep

Sound quality: is ok to gamble, but fortuitous for music I have way more Beyerdynamic DT770 Pro 80 ohms because the Sennheiser swallow too many details, which is better by a mile in all other pitches of the DT770. (My subjective opinion as a non-professional audio)

Comfort: was praised here hot, doing called him the cosiest Headphones ... but I can not agree entirely. The bow pushes me after a short time easy (really only slightly), but is still significant.
Here not even wear again for comparison pushing DT770 after hours, is simply a pleasure.

Microphone: It was noted by my colleagues in the TS3 that I use another headset, but they could not improve on my own previously noted (18 microsoft headset)

Conclusion: I bought it for 175 and I have expected more (especially when wearing comfort), but I'm not extremely disappointed and will keep the headset. Next time I'm going to take more money into their own hands and buy me the headset from Beyerdynamic.