I've been using KXStudio for a few months now, mainly to record demos, and i love it.
But i'm still using the sound interface that came with my laptop, and well, it is ok to record demos, but i'm now looking for a usb sound interface (no firewire on that laptop) and my head hurts trying to find compatible hardware, with required specs and all...
That's why I need your help

I'd be really really thankful for any advice !!!
Even a simple "I'm using XXX, and it's working properly" would be great !