Stubble:
I would have to agree with what baseballguy and JS stated about Coach Wargo and his camp. He is a great guy to have in your corner, and will always take the time to answer any questions or concerns you may have.
All in all, a very worthwhile investment.
This was recommended to my son by his HS coach last year as a sophomore, and again this year, attending the morning session only. Since last year, Li'l Heat has been contacted (within the restrictions) by quite a few recruiting assistants, and has kept in touch. After one week this year, as a junior, we have been happy with the results. I seem to remeber seeing around 30 or so signed in on the "attending Coaches " roster, but you can be certain that will more than likely double in the upcoming weeks.
I can't speak from experience regarding Diamond Skills, but I have heard good things from there as well.
Good Luck!