I got a chance to see it in '07, and while going to a high school competition might seem trivial to an NBA fan, these are some big time names and talents.
To put in perspective, here are some of the guys I saw in '07 -
International - Portland's own Nic Batum.
USA - Derrick Rose, Kevin Love, Michael Beasley, O.J. Mayo, Nolan Smith, Jerryd Bayless, Kyle Singler, etc. (they all made the league)
And this year's class blows that year's away, both from the US and the International team.