MACDUB
'This year it's Howard, Hibbert, Noah(?)'
Top 2 or 3 centres is a massive call. Also keep in mind there are a lot more quality centres out there than you've mentioned above.
How about Drummond, Jefferson, Gasol, Gortat Jordan and Cousins?
That's without including Horford, Lopez and Pekovic who missed most of the year to injury, Bosh, who predominantly plays the 5 now, aging centres in Chandler and Bogut as well as in and upcoming guys like Vucevic, Valanciunas, Favors, Kanter, Noel and Embiid. Keep in mind Monroe and Davis spend a bit of time at the 5 too.
I like Adams. I also believe he has a load of potential but he's had an decent year for a rookie in limited minutes. However I cannot see him being better than all those guys ever.