Hi! I want to purchase a headphone that is good for listening to music and gaming as well. My current oprions are the these two headphones. Since they are open back ones, the should provide a wider soundstage with greater positional audio in games like Counter Strike. What are the differences between these headphones? I like the Sennheiser one a little bit more, but i don't want to invest in a Sound Card. I have the gigabyte H77-DS3H motherboard. Will the sound leakage go into my microphone? Please help me decide on which is the best option. Thanks for the anwers.