I would say OKC, the Heat, or the Lakers if they get Dwight Howard. I think a Steve Nash, Kobe Bryant backcourt with a Dwight Howard, Pau Gasol frontcourt would be very very difficult to stop. Plus if they were to match up with the Heat it would be:
Steve Nash - Mario Chalmers
Kobe Bryant - Dwayne Wade
Metta World Peace - Lebron James
Pau Gasol - Chris Bosh
Dwight Howard - Udonis Haslem/Joel Anthony
I think this would be a really fun game to watch. The problem is the Lakers would be weakest where the Heat is the strongest. SF. However it would work both ways as Dwight Howard would have a fairly easy time.
The NBA Champions iis going to be the Miami Heat because they have upgraded and are now better with the additions of sharpshooters such as Rashard Lewis and Ray Allen. I believe with superstas on the Miami Heat of Dwyane Wade and LeBron James they are going to find those open shooters. However, the Los Angeles Lakers can win it all next year if they get Dwight Howard because if the Lakers make it to the Finals and face the Miami Heat the Lakers will be victorious because of Howard's presence because Miami is not good against teams with great big mans. My say as if right now is Miami Heat. Repeat!!