First of all, I'm quite new to digital sound. I have a crappy motherboard integrated sound chip which I want to replace in favor of better sound quality and features.
I'm looking for a card that's capable of playing back 24/96 sound which would be DVDA in my case. Do you even need a sound card that supports it or is a software player like WinDVD with the DVDA addon enough? I don't have any DVDA discs or WinDVD either at the moment but it seems interesting. The second thing that's quite important is game compatibility ie. EAX and other 3D audio standards.
Third, Linux support would be nice since I'm going to start using it sooner or later. I don't know much about it either so I don't know if Linux compatibility is a problem with sound cards at all.
Right now, Audigy 2 (the basic model) has caught my eye as it has 24/96, is advertised as "the only card that supports DVDA" (is that true or do I simply remember wrong?) and has EAX support. But then, I hear complaints about the sound quality of Audigy cards and also bad things about Creative forcing customers with Audigy 1 to upgrade simply by discontinuing driver support.
The other option would be a Terratec card, or...? Anything with the features I mentioned and an affordable price (<100€/$) will do. Audigy 2 costs 70-80€ where I live.
I'd be happy for any hints.
edit: I forgot to mention that I also need 5.1 support. Hmm, am I too demanding?