Headphones for both pc and 360

[sirrahkin]

I've been looking for some new headphones ( with mic), but would like some that work on both the pc and my 360. Currently i have an x-fi card installed, so I'm not sure whether i should look for a usb set, or a set that connects to the card and optical on the 360. I'm not overly worried having them connected to the 360 and the pc at the same time. from ocuk, I quite like the look of :-

http://www.overclockers.co.uk/showproduct.php?prodid=SP-022-SN&tool=3


and the Tritton ax 360's

Any thoughts/recommendations are greatly appreciated, thanks.