If you do home recording to make music, you might want to get real audio interface.
Any computer sound card company (creative, logitech, etc.) are for mostly for gaming. Not good enough for sound recording.
I know this since I am a professional recording engineer...
I personally use Digi002 (avid/degidesign) at home for ProTools (not PC though. Mac is the standard for music production.)
It all depends on how many I/O you need, how good the A/D, D/A converter you want, How high the sample rate and bit rate goes for recording and play back and also what kind of audio application you are going to use.
For using ProTools, any digidesign audio interface are good (M-box, Digi002, 003)
Budget one you can get is one from M-Audio.
If you are going to use Logic, Digital Performer, etc, you can use any audio interface.
link of pro-audio super store.
Audio Interfaces | Sweetwater.com