Personally at this point I rate those 3: Boston, Orlando, Miami.
I think the Miami experiment will be all or none. i think the only way it will work is if Lebron is willing to take a step back, and let Wade be the guy. Lebron is the most versatile, and overall talented player on that team...he has the ability to fit in any capicity they need, and to clean up after the others. He doesn't need the ball in his hands to be effective or change a game. Wade on the other hand will be lost in the shuffle if the ball is always in Lebrons hands. He won't be as adept at cleaning up after Lebron. So if Lebron lets this continue to be Wades team, this team could absolutely shatter records...if it becomes Lebrons team, I don't see them doing much better than he did in Cleveland.