Thinking about buying a nice set of headphones, mostly for gaming but i also listen to a lot of music. I'm considering getting some Audio Technica ATH-A700/900's but my friend is telling me i should get the Sennheiser PC 350 headset instead. I had a sennheiser headset a few months ago and the mic died on me in about a month so I'm not sure. I already have a stand alone mic to use with the headphones. Anyone suggest either of these over the other?