My 2009 grad son went to the VWC showcase in 2007 and 2008, and it was a great experience. Coach Booth isn't for everyone, but the showcase is very well-organized, well-run, and there are a lot of college coaches and a few area pro scouts who show up every year.
My son got a lot of looks, a lot of follow-ups and several offers due in part to his participating in this showcase, so we highly recommend it. And no, I'm not related to Coach Booth...