I am a Gators fan and watched lots of Gators basketball Oh-Fours played last 3 years. I would say Suns need another power forward/center and Al Horford would fit into Mike D'Antoni's run and gun style more than Noah. He can shoot from outside, block shots and pass. He is agile and also have a big body to bang with Duncan at best. Noah is an energy guy Suns would also benefit down the road. He is very agile too and can pass, block shots but I think until he develop a reliable jump shot ability like Amare and gain more weight. He won't have much playing time. As for Brwer unless Shawn Marion is traded I don't see why Suns need another forward like Brewer. Just my two cents.
I seriously doubt the Suns will have a choice, since they will either not have a pick or end up at #5 or #6. My guess is that the first four picks will be Oden, Durant, Wright, and Horford. There MIGHT be a team that would skip over Horford for Yi or Hibbert, but the odds are very low.
If Horford is gone when the Suns pick, then Brewer is probably the best available player. His role for the Suns would be to replace Jones in the starting lineup at SF with Marion moved to PF.
Brewer promises to be a be huge improvement over Jones. Jones is a better than average defender, but Brewer is an extra special one. Jones can blow shots but Brewer is a remarkable shot blocker. Jones is a below average rebounder while Brewer is an excellant rebounder due to greater quickness and much longer arms.
Neither Jones nor Brewer are exceptional shooters, but Brewer appears to be a more complete offensive player and goes to the basket better than Jones.
Against most teams, Marion at PF is a great move because he can defend and has the quickness to beat most big men. In last night's game, he all but forced the Spurs to go small.
I have no doubt that replacing Jones with Brewer would create an electrifying running team and a great perimeter defensive team. However, I still prefer Horford because Amare is not well suited to defending the low post and the Suns aren't going to wint the NBA championship unless they can defend the post.