Options for GC Controllers on OSX Build

[Weavel33]

With the absence of GlovePie on Mac OSX, I'm concerned that I cannot go out and purchase any old usb gamepad and expect it to be directly compatible with Dolphin, can I? So I'm wondering what are some comfortable, affordable, and most importantly, compatible options for GC controllers to be used on a Mac. Or is my best option to simply dualboot windows (thereby being able to use directx and other features only available in windows)?

Thanks