Scott,

Had the M-Audio Fast Track Pro for awhile but seemed a bit quirky to me, so I switched.

I've been using the TASCAM US-144mkII for a few months now, and is stable as a rock so far. ASIO drivers... can have BIAB, RealBand both open and using ASIO, Windows Media Player etc.... all open and behaving very nicely together and on Win 7 64bit. Sorry to hear about the 800 not being as nice.