I remember trialling Vista on my old PC which it run well but the creative soundcard sounded well shit. It was so flat and sounded rubbish on the official Creative drivers. Now I know why, hand on heart I have sworn by Creative for over 15 years even with built in sound I have opted for a creative soundcard.
My current PC has a Creative X-Fi inside and it sounds good but it has some issues clicking occasionally especially when playing sounds from one app and going to another it will click. Before it used to make a screech after a few hours of use and stop working.
Sorry creative, next time I will stick with built in sound instead of the shite you are pushing out.