Unfortunately I'm gonna have to give you crap about Razer. Gaming headsets in general are mediocre in their sound, if money isn't an issue I'd recommend getting some really nice headphones like sennhieser/audio-technica/beyerdynamics, and for a mic find a cheaper desktop or clip on. Surround sound for headphones is highly overrated and only gives you a faux depiction of where the sound is, a true stereo headphone with a quality soundstage will beat simulated surround any day.
Here's some further reading: http://www.head-fi.org/t/483802/quest-for-holy-grail-of-gaming-sound