Have a look at the M-Audio ones. There are better ones out there obviously but I don't really see the need for a hi-end interface.

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i dont trust usb for audio much..i might be completely wrong though. ive just read that usb can be problematic and firewire is much better- thats why i bought a motu 828 because its firwire and multi-input, exactly what i needed because when i go to college, i'll have a laptop that i can jsut plug it into and go from there. but for just recording sets, a motu might be overkill for you.

m-audio makes some firwire interfaces too, ive heard that they're pretty good, you should check em out as an alternative to usb too.

edit: novation makes a USB one too, not sure if its any good, but i love novation synthesizers and they're really well built.