Mattrach, but only cos he's funny to watch
nah, actually sometimes his stuff gets a bit too "random-shred" for me, JC keeps it a bit more tasteful. JC's best.
I don't think Funtwo really belongs in the same league as those two, not at all. He seems to just do what a lot of guitarists do: play fast stuff capably just not smoothly. This is most evident when you compare his version of Canon Rock to JC's. ... Actually watching it again Funtwo's really isn't anything special at all.
Also JC seems to be the only one who can do the 6string sweeps.
And am I the only one who thinks Mattrach's head looks wayyy too big for his body? lol