I have definitely considered this but the extra step of then having to transfer from the card rather than just haing it on your drive puts me off a bit.
The other thing I liked when I had an Audiophile 24/96 card before was that I could set up CD wave on a timer so the file was the same length as what was on the tape.
Anyways, M-Audio has always been known to be reliable and bit perfect so it will likely do the trick even if it has a lot more on it than I really need.