I'm about to purchase a new receiver and i can't decide between the Sirius Sportster 5 and the XM XPRESSRC.....right now i am a Sirius subscriber who has one of the old Audiovox units. One of the biggest concerns i have is that if i buy the Sportster from Sirius will i still be able to listen to the MLB games??....if not i intend to go with XM's receiver....