I'm ready to get a good sound card. I'm running a P4 2.4ghz on an XP platform. My budget would peak at $800, but I'd like to spend less. The cards I'm looking at are: M-Audio Delta 10/10, Digidesign Digi 001, ST-Audio DSP3000, Echo Layla, Presonus Firestation 8-channel, Aardvark Aark 24, and...