I bought a pair of red Arcadeguns from the eBay store and the were delivered quickly and without problems. They were a little cheaper than the Ultimarc version and the big difference will be the aesthetics (do you like the GunCon look of Ultimarc's case, does Arcadeguns' red, white, or blue go better with your cabinet?) an button placement of the secondary buttons. There was also a slight problem of availability of the Ultimarc guns so I don't know how that factors in but it was enough to move me to buy the Arcadeguns.