No matter where KD goes.... that team is going to the Conference Finals guaranteed. Nonetheless... I'm not sure it is the smartest thing to go after Durant for some of these teams....
Warriors - They would need to get rid of everyone but Curry, Klay, Green, Iggy and maybe Livingston. Where is the bench? Who would be coming off the bench? Who is the center, the rookie they drafted?
A lineup of Curry, Klay, Durant, Green, Jones (Rookie) and a bench that consists of Iggy/Livingston with the rest taking minimums.
Spurs - They are a bit better off than the Warriors. Keep Parker, Kawhi, Aldridge, Duncan, Mills, Anderson, Manu. Sign rest of team to minimums.
A lineup of Parker, Kawhi, Durant, Aldridge, Duncan is deadly. Add in Mills, Manu, Anderson plus two more bigs... Spurs are the favorites in the West.
Clippers - They would need to get rid of everyone but there big three and Reddick. Sign everyone else to minimums.
A lineup of Paul, Reddick, Durant, Griffin, Jordan seems deadly too. Where is the bench though?
Celtics - They can keep everyone and have plenty of room to go after another near max player if they get rid of Amir Johnson's 12 million.
A lineup of Thomas, Bradley, Durant, Horford?, Olynyk with a bench of Smart, Crowder, Brown, Sullinger, Zeller would make the Celtics the second best team in the East.
Heat - No idea how it would work. Obviously a lineup of Dragic, Wade, Durant, Bosh, Whiteside is the best in the East. I don't see how it is possible for the Heat to sign four max guys, let alone five.
Thunder - They can keep everyone.
A lineup of Westbrook, Oladipo, Durant, Kanter, Adams and a bench of Waiter, Roberson, Illyasova, others would make the Thunder arguably the best team in the West.
Best option for Durant in my opinion would be to stay with the Thunder for one more year and test the market again in 2017.
If I were Durant, my next choices would then be Spurs, Warriors, Clippers, Celtics, Heat.