My two cents:
Pitcher - I did not see all of them, but the most enjoyable to watch was Ely. I now know what "violent delivery" means. He really cranks it. I do, however, have to agree with JP on the accuracy issue.
Catcher - Rauiri O'Conner. Up quick and fired hard with accuracy.
IF - Ryan Petrulis. Quick hands. Got rid of the ball quick, and fired hard with accuracy. His ceiling is still pretty high. I think John is undershooting his height with 6'2" something... he looks taller. Going to get much bigger and stronger. Nice young man to observe. I would like to have seen him try the catcher spot...I think he could have topped that group as well.
OF-I liked Rob Russell. I could be biased because I know him. One of only a few that did not "Ring the Gong". Really fired the ball.