How about Kerry King. He´s solo are damn fast but it so fu*cked up. First of all, does he know anything about scales and wich notes fits in in some of his runs and his killin´ evrybody with his whammy bar. He´s not like Vai who knows what hi´s doing with whammy, Kerry is messin´ around and mostly sounds really bad and even false. Jeff is much better but he´s not too bright either. However when it comes to riffs Kerry King shows evrybody that he´s the King.