Calling all audiophobes!

I'm looking for a new audio interface to sit underneath my computer monitor.

I was using the Behringer UM 18-20 until yesterday, when it started giving me static and RF noise.

Ideally, I'm looking for something with at least 4 line-in channels and 4 XLR inputs. It must be USB, and fairly accessible.

If you know of something in a decent price range, no higher than $500, I'd be interested to know more. Thanks.