Hi,
don't do it if you have a PC, I did it from 1814 to traveler (beacuse of the 2 more mic preamps... how stupid...), and all I have now is a sometimes stable working system. The M audio drivers were in fact better working...
If it was not for the cue mix feature, which I use for independent monitoring of my HD recorder, I would have sold it...
now I own two audient asp 008 and do not need the mic amps, and I do not need y computer for mobile recording, where I need to rely on my system
I did a week long test of the RME fireface and it worked without any trouble.
Sound is one issue (and that is not so bad with M-audio in my opinion), but you get more pissed of, if the thing is not reliable wokring after a so called update
best
leif