Take this as blanket advice: do not mix music and gaming when you consider headphones. I tried and learned that they do not mix. You're handicapping one of the options by doing so. For positional audio, there are a few great options. My personal preference is Sennheiser HD598 for competitive FPSes. I used to use a dedicated gaming sound card for them, but my onboard audio is currently quite good for gaming. If you need my street cred for these recommendations, PM me.