The reviews I've read all say that the Accoustic Edge is the best card since the Aureal Vortex2 cards. And that they do not have the problems of the Aureal or SB Live. I still have the Aureal AND the SB Live. The Aureal is by far better than the Live, so if the reviews are true, I would go with the Accoustic Edge.
Cast not thine pearls before the swine