The Beyerdynamic MMX 300 premium headset is very comfortable, has a great sound and a good Mirko. Moreover, it is by a German company and I have also decided to because I have heard of the good quality and workmanship only. As far as it gets from me 5 stars.
BUT
I got me beginning in March 2014 ordered this headset, but after two weeks she has the sound changed significantly depending on the angle of the cable to the headset. Cable break. The headset was sent back and I got a new one. Now it's the beginning of July 2014 and I have the same problem. Twice within 4 months a cable break of two each new headsets in the same place, not bad ... dehalb there is only 1 star.
I'm going to sit down with the customer support of Beyerdynamic in combination, there is wide then read here.
EDIT 22/07/2014
The headset is mitlerweile back from the repair and functioning properly. And in less than 2 week! For Beyerdynamic gets kudos from me.
I changed my original award of the stars on 5. Actually, I just wanted to 4 assigned because two loose contacts on two new headphones have a bad impression with me. However, the rapid repair of Beyerdynamic has made up for it.
In the top service of Beyerdynamic headphones gets my full recommendation :)