does it need to be a headset? if your pc has virtual surround capability from its onboard soundcard (or if you use razers free software) you can emulate 7.1 with normal headphones. you could pair say a hd518 or hd558 up with a cheap mic like the zalman clip on or moovmic to make a headset. if your onboard soundcard is not capable and you dont like the razer software a cheap soundcard can also accomplish this.
generally hifi headphones will be much better in terms of audio quality than headsets.
if you absolutely must have an all-in-one headset then perhaps the pc320. almost no bass output and you'll need virtual surround support, razer software or a soundcard for virtual but otherwise a solid choice.
if you just want a plug-and-play...