recomendations for usb sound card

[flexoman61]

Can anyone recommend a usb sound card to use on my laptop for digital modes?
I'm using a Startech but I am having problems with some kind of interference that will
cause "jitter" especially with WeFaxes that take several minutes to decode.

Listening to audio recordings using my startech soundcard I hear very loud interference
that last about five seconds and happens often, and it can be seen on FLDIGI waterfall. I'm not sure if the soundcard is picking it up from an external source, something
running on my laptop, the usb port just sucks, or the cpu can't handle it.
The cable I use to connect the radio to laptop has about two pounds of ferrite beads on it.

My laptop does not have a dedicated mic/audio in jack. But when I use my headphones clipped onto the laptops built-in
mic I have no interference problems at all, but much less quality in the decode.

Any help would be great, cuz this is seriously annoying.

[ChrisSmolinski]

I've had very good results with a Griffin iMic.