I noticed all of X-Pin's power supplies on their main website are out of stock. They must be selling well then. We have bought their Data East PSU so far and it's wonderful. No problems whatsoever and I might even say that all the solenoids are more powerful now, flippers included. I love how efficient X-Pin's stuff is and would 100% recommend their products. The diagnostic LEDs and numerous test points are great features. We have another System 11 PSU on order. I would buy from K's Arcade, you'll get it in 2 or 3 days with priority mail and there is lots of helpful documentation about the site in the package.