best PC gamepad under $30?

What's the best PC gamepad I can get for under $30 that's recognized by ZSNES, FwNES, ePSXe, etc?  Comfort and compatibility with most of the best emulators being what I'm looking for, basically.  Any brands I should avoid?

Playing with the keyboard is for the birds.

fatherbrain from shoryuken.com here. try this one.

http://www.radioshack.com/product/index.jsp?productId=2348187&cp=&kw=psx+adapter&parentPage=search

My ps1 dualshock is better than any PC pad I've ever tried. grab this if you dislike PC pads.