THe Gem guitars come scalloped out in the upper and Richie blackmore use to scallop out his whole neck on a strat, every fret, and get some great effects from it, I should specify more here, I have many favorite guitar players that all shine from time to time, some play great while standing there like a tree deeply rooted while others run all over the stage. But when I saw this video a while back, I gave it as one of my all time favorite guitarist simple because of all around performance, expressiveness, emotion, tone, playing skill along with out of the box with the whammy bar and volume pedal.
I feel as far as all those elements, Steve Vai has put his guitar on a table, looked it completely over at every place and said, I am going to find out what I can do with every part of you!
To me the video shows just how deep some one can get into their music and there instrument, after all, our instruments are an expression of ourselves.
So I feel comfortable to say this is one of my favorite guitarist because of what this video gives to me musically and the video vision of inspiration that it projects of some one going the extra mile and taking the time to develop (not just play) his art so much, that a signature sound is created, and that makes music so inspiring to venture out and do more with it.
* So at the risk of giving a favorite's great example FOR ME it kind of goes like this..
In the guitar world, Hendrix paved the road, Jerry poured the foundation, Harrison built the walls, Clapton did the landscaping, Demiola painted the house and Vai framed the roof, but the roof has yet to be completed or closed in, every guitar player in the world is still trying to decide what material to use for the roof, and pedal's, devices and techniques are just the hammer and nails they use...
and so it continues....... and Bass players live next door, must be a duplex! but theses are houses that will probably never have a mailbox on them simply because it would have to say the best lives Here and in reality we all may build on the same foundations of music but our finished product is to each his or her own liking, don't just mow the lawn or do maintenance, build an addition!... Shine On You Crazy Diamonds! and play hard! ...peace John.
P.s and as far as all the other great guitarist whether blues or jazz or whatever, they are just up the street working on a different house.