The Miami Heat and Boston Celtics are locked into a tight Eastern Conference Finals, with the Heat currently up 2-1, but what about beyond this season? Sports Illustrated Insider Chris Mannix gives his take on which of the two franchises is in better position to remain at the forefront of the Eastern Conference conversation. Boston has better youth, but Miami has more potential to add a star down the line, so the gap between the two may not widen for either very much.