As far as I know, the Sound Blaster cards are mainly built for gaming and movie watching. It will surely work better than any onboard sound card for midi usage, but if you want good DAW performance buy something lilke the M-Audio cards.
That said, I like this card quite a bit. It has great support in Linux both in the kernel module and Alsa. It supports something few cards do anymore, hardware mixing. Makes for a lot less problems with playing sounds in multiple programs at once when using Alsa. On other cards I always has to mess with dmix to get it even remotely usable.
So, if you are using Linux and not doing heavy audio work, keep it. Otherwise, throw it away and get a better one.
I actually do have an M-Audio
Audiophile 2496 installed. But I use it for MIDI rather than a soundcard. Does it double as a good soundcard? Never really tried it due to its RCA ports.
[I did have the Audiophile and Audigy both installed at one point, but it really crowded up my computer; if the Audigy had slimmer cords rather than those ribbons, it would be SO MUCH EASIER]
I've got an Audigy 2 ZS, and it's great, if you use it with the KX drivers available here. They allow chaining multiple DSPs together, the only one I use though is the awesome EQ. The output ports on the control box pack quite a punch, great if you don't want to invest in a headphone amplifier (using it with HD555s, and can get it loud enough to cause serious ringing). I found the MIDI ports to have a slightly longer delay than using my digital piano's built-in controller. Using the KX drivers, it's awesome, without them, not so much.
Alright thanks for the driver suggestion.
Well, from what I gather, this thing seems to be better for adjusting audio, and playing games... which... is not at all a disadvantage.
Most of my computers run on onboard audio, so, this thing will fare nicely for some good gaming (uh, modern games, like Majesty 2).