Haha, I was the first one to vote? That's great, cause now everybody knows that Petrucci is fastest!!!

How can I be so sure: Cause he's the only one I've ever seen who plays as fast both with disortion and without disortion.

Malmsteen should be no 2, cause he still plays a guitar from the 70's, Vai and the other have high-tech stuff (Petrucci aswell though), and shows that it is the guitarist who play fast, not the gutiar.