DONT get a Vortex. My had the choice of a vortex2 or sb live! x-gamer and he is hitting himself in the face for getting the vortex.
They have lack of driver support, they havnt developed a new driver in over a year, and well the Windows 2000 Beta drivers dont work worth ****, they are a ***** to install, offer less base, and dont even work with some games like Diablo II...

SB Live! X-Gamer is the best choice!