I'm planning to bring XM Pro to MGC. If you're going, make sure to give it some plays. Shoot me a PM and I can meet up with you and explain some of the rules. It's crammed full of shots, has at least 4 multiballs, and 2 different sets of modes (heroes and villains). It is a really cool game.
If you do go the route of MBr - make sure to hit up @kingpingames.