Vai has freely admitted that he let his ego get in his way in the past. By the time he joined Whitesnake, he was a self-admitted a-hole. He believed the hype, and became a less than stellar human being. He’s pulled himself above that now, using the lens that age and maturity provide a person with, and by all accounts, is now a great guy and teacher. That each of them is so willing to give back to the music community, is to be admired.