sound quality of that card. The specs on mine report that it supports the frequency range of <10Hz to 48kHz at 116db SNR. The D2 is a very high quality card that not only supports real-time DD/DTS encoding, but also >118SNR and Burr-Brown DACs.
Honestly after hearing the Xonar-DX and the pleasant experience with it's drivers and software I'd never go back to a Creative card with their craptastic drivers. The depth and clarity of the Xonar compared to on-board sound was like night and day.
EDIT (first post)
It's M-Audio, they're all good. Just pick on that fits your needs. I'm not familiar with what you're connecting to I can't exactly say if the Fast Track Pro is the right option.
ok, change of mind again :P. I'm going to keep with my PC \, I just don't think there are enough sound card options for mac, I think I will gain more from a PC.
I will buy this: http://www.scan.co.uk/Products/Asus-...PCI-Sound-Card =)
and install Mac OS X onto my PC :P good ol' insanely mac.