In a few days I will be purchasing my IPAC and Opticac to wire up my controls, and then my Mame machine will be done. I was wondering what works better for these, the USB input versions or the Keyboard and Mouse inputs. I have a usb hub, and my keyboard and mouse have switchable usb/ keyboard mouse inputs, So I can use either or for each. So should I put the actual keyboard and mouse through USB or the IPAC and Optipac through USB?