Judging by summer league (always a risky proposition)and roughly in their order of likely value (IMHO):
thumbs up
Harangody--will always be short but has skills
Janning--heady, steady, ready; biggest surprise
Erden--mobile big with agility and court sense
Gaffney--spider man with excellent defensive skills
worth another look
Lafayette--fast, shoots with range, poor decision making
Parakhouski--magnet for rebounds, uses ample body well
distant possibility
Sims--may be the 5 to 3 conversion for the "big" three