Ill vote for Hammett but Ill tell you why. Noew Im not a Metallica fan, not by a long way. I reckon its pretty obvious that Vai is by far the more skillful guitarist but I really don't like his playing I mean its unbelievable but I cant stand all that wanking **** he does. take FTLOG for example, its got a good tune, great song but I just think all the mental stuff he does ruins it. Hammett is a technically very good guitarist though not near as good as Vai but he plays alot more melodic stuff(although Ill never forgive Metallica for what they did to Whisky In The Jar. I mean that idiot Hetfield doesnt even know the words).

I vote Hammett although it pains me to do so. But Im making a point.