An Audigy 4 - works fine with some tweaking as there is no output on start up until the Audigy A switch is switched on, but this is easily done with
Code:
amixer sset 'Audigy Analog/Digital Output Jack' 'on'
somewhere in a startup script. Don't know if I would recommend it over another make, but it does make life much easier having hardware mixing. Incidently, I don't know why exactly, but it is only a few sites with flash that have no sound like google video, most flash sites work ok with sound and software mixing.