Denver is not a championship contender. Magic, Cavs, Celtics, Lakers, Spurs and a very outside chance for the Blazers, and that's it for next season.
Lakers, Magic, Celtics, Cavs. Spurs somewhere in between, really depends on their health, maybe the Blazers if they develop a bit more.
Based on last season, I think Denver has a better chance than the Blazers, pending any sudden improvement by Roy and Oden (Which is very likely).