Jabari has to improve defensively, no doubt about it. His best position might still be the 3. I do not think Henry is the Bucks' top target, but it might be too great of value to pass on if he is there at #10. 6'11" with a 7'2" wingspan, is Henry even done growing? Henry's ability to handle the ball is remarkable for his age and size. His shooting will come, he has good form. My choice right now would be to take Valentine at #10.
Some interesting free agent centers: Bismack Biyombo, Dwight Howard and Al Horford. Biyombo would be a defensive-minded center, but how much will he cost? Howard may not be what he once was, back issues? Horford is similar to Monroe, nice offensive skills but not a rim protector. Will the Bucks try to move Monroe or stick with him at least another season. Henson had problems with injuries last season, but when healthy can certainly be a shot blocker. Should be another interesting offseason. Just hope the Bucks get it right.