Lebron is going to win multiple rings in Miami. I just don't think that there will be a team as good as Boston, LA, or San Antonio to stand in his way in the near future. The Bulls will be tough competition, who knows about New York, and there are always the team that nobody really predicts, but no team has a better young core than the Heat.
Individually, yes. Collectively, no.
Collectively, who do you like better?
Also, do you expect that the Heat will fail to improve either their roster or their cohesion over time?
Just lost my post while typing...this will be shorter.
Miami will add pieces, but the core is flawed. Lebron refuses to rotate the ball, and is only a willing passer when there is a high probability for an assist. That's why his Cavs teams ran into a glass ceiling.
Neither Wade nor Lebron is a shooter, so they can't create space for each other, unlike Paul and Ray, two of the best shooters (and slashers in years past) in the league. This simply won't change.
In the west, I like OKC and Denver much better, with Memphis as a sleeper. Chicago and possibly NYK in the east. I wouldn't count out the Nets just yet, either, though they need work. Each of those rosters is far, far more balanced than Miami, though it seems that Memphis is a bit lacking in cohesion...