I disagree, top 10 sure, but not top 5.
Warriors, Cavs, Spurs are pretty obvious. I believe the Clippers are better as are the Raptors. I wouldn't be surprised if the Thunder (assuming they keep Westbrook) are better. Also wouldn't be surprised if the Pacers and Pistons are better. If Bosh plays and they keep Wade, the Heat could be, the Hornets could be, and I wouldn't be surprised if the Jazz take a big leap