Steve Vai UV777PBK was given to Billy Sheehan
Billy Sheehan is arguably the best electric bassist there is, as is Vai the best electric guitarist there is.
Billy Sheehan can play the guitar pretty well, but he doesnt come close to his his bass playing and he is even farther from Vai's guitar playing.
Based on his bass playing, one would think Sheehan is just as good on smaller strings, but that isnt the case at all. Of course, Sheehan can be described as Vai's counterpart on bass, but his guitar playing isn't anything to write home about.