Well, it's really up to Eddie. Does he want to be recognized as a house hold name, kicking ass the UFC, the premier organization for MMA, a place to truly challenge yourself? Or, does he want to go unnoticed to the world outside of MMA fans, make less money in the long run, and be a big fish in a a small pond, a champ in a second rate organization that draws little respect from the rest of the world and has nothing there to challenge him?
Up to him really. But if he wants the world, and wants the fame, the money and to be considered one of the best... the UFC is the place. He's not getting that ANYWHERE else in MMA.