I have an AKA EIE usb card. It is both cool and disappointing.
Cool because it has 4 inputs (XLR/jack) 4 outputs and 4 inserts, MIDI I/O, and can be used as USB hub. Since it is USB i can switch it between my mac and my pc.
Disappointing because it has been sold to me as a 24 bits card and I got the 16 bits model and ASIAO4ALL doesn't work so well. I know the 24 bits model has its own driver, but I don't know how good it is.
I can't say anything useful about the audio output, it's decent for me but I don't have a very good audio setting. The inputs are ok, better than my Fender Mustang actually.