To complement your $199 arcade..
here is a $45 Xbox 360 controller with the USB PC wireless receiver
It works both the xbox 360 (without the receiver) or on the PC with the receiver..
It seems strange that the Windows version costs less than the official xbox 360 version..
Both are otherwise identical..(other than the bonus usb receiver)
Model number is JR9-00003
Other computer sites have it listed for around $55 to $80
Wired controller is $29
It's under the Gaming tab by the way, can't link directly to the product.