I use the M-Audio/Midiman Delta 1010. It has the best "bang for the buck" ($499 for 10-in/10-out) and has working W2k drivers. It seems to be one of the most recommended on this board lately -- I'm surprised that it wasn't listed in the poll.
I use the SB Live that came with the computer for midi.
I use the SB Live that came with the computer for midi.