Here's my quickie-list of what to buy and what not to buy, feel free to comment or edit it.
Good for pro-audio (hassle-free):
* Echo
* M-audio
* RME
OK for pro-audio (might work):
* Creamware (wait for the XP drivers)
* Terratec
* Turtle beach
bad for pro-audio (here be dragons):
* Creative
* Pinnacle
* SoundMAX, other onboard crap
* Aureal