If it is just the controls you are looking to do, I'd suggest the X-Arcade route. The setup will let you do both Analog and Digital via a button press which toggles between modes. The Ultimarc route while seemingly cooler will cost you alot more to do the same thing considering all the pieces you'd need to purchase and it doesn't help that Ultimarc perpetually seems to be out of some of the pieces.
If you need to also interface it with a 15Khz monitor, Ultimarcs solutions seems really cool, but again they are out of stock on the parts.
-Goz