Had my pair for 2 years and had no problems. Really well built and durable. They would have lasted a lot longer but my dog got a hold of them.
Really comfortable. Fit around even my big ears. So no pain.
No-one ever complained of background noise or bad quality voice.
Sound was really good, really improved my game play on COD4 now that I could hear every footstep.
Well worth the price as they last such a long time. I'm going to try the mark II version and hope they are even better!