Isaac Hamilton recently picked up an offer from Washington. He said that Arizona, USC, UCLA and Colorado are recruiting him the hardest.
http://scouthoops.scout.com/2/1085069.html
New scout.com article lists those same 4 schools and then mentions others as showing interest but does not list SJU:
Hamilton said that Arizona, USC, UCLA and Colorado are the four schools doing the best job with him and broke down what he likes about all four programs.
Arizona: “I really like the coach,” said Hamilton. “Just looking at the way they play and how he develops his players. (Arizona) has a lot of NBA players come out of the school and I would hopefully be one of them.”
USC: "I like that it's close to home so my family would get to come see me play."
UCLA: "Same thing as USC. It's close to home, great campus, the coaching is good and it's a great environment."
Colorado: "My brother is with the Nuggets now so if I go there I would be with him."
Beyond those schools, Hamilton mentioned Louisville, UConn, Oregon, Washington State, Oregon State, Virginia Tech, Texas and Texas A&M as programs he's hearing from.
http://scouthoops.scout.com/2/1087896.html