I am going to order from groovy game gear...
Does anyone have experience with either their GP-Wiz40 or Eco models? This is how I would hook up buttons and joysticks? It seems to be a keyboard based adapter, so can I use two of them or will this mess up my binds?
Also, has anyone used the xin mo model USB Adapter?
Thanks
I have the GP-Wiz40 Max & the KeyWiz40-ST from GroovyGameGear on different controllers.
Both are Top Notch interfaces.
Yes, that is what you would use to interface the joysticks & buttons.
The GP-Wiz40 is a USB interface, so it is seen as a joystick controller.
The KeyWiz is a keyboard interface, so it is seen as the keyboard.
Both are fine & work great for MAME, both are pretty much set to Mame right out of the box.
If you are going to use two GP-Wiz40's together,
make sure you get the
USB Device Number different for the second interface.
Second option is using the GP-WIZ & a KeyWiz together.
So, I am assuming that you need a 4 player setup if you need two interfaces?
RandyT's interfaces rock

You can not go wrong with either one, I am about to get another GP-Wiz40 for my rotary joysticks.
That Xin Mo is consumer grade, were the GP-Wiz & KeyWiz are top notch quality.