In this situation, we recommend reviewing the bio's of the teacher at the private lessons
page. And you could review some of the teacher's previous group lessons to get an idea of who you might like.
This is a tough one though. Storm Stenvold specializes in this type of music, Lyle Ronglien has given several Metallica private lessons already and I know that Michael Johnson is a BIG fan of Metallica.
It's your choice...