Why should I or should I not trade my Mark IV for a Shiva? I've been entertaining the idea of trading y Mark IV in on a Shiva. I'm kinda torn about it. On one hand, I've always wanted a Shiva. On the other, I can pretty much nail any tone I want with the Mark IV. Unfortunatly, I can't have both. My check book just isn't that deep. So the Mesa would have to go if I get the Bogner. Anyway... I'd love to hear your thoughts on this issue.