Ive been thinking lately that my Mesa Mark IV is not cutting it anymore. I put a Maxon OD808 in front of it and I'm still not satisfied(Dont get me wrong, this amp is one of the best Ive had, but for in your face metal, Im not happy). People have been telling me to check out the Engl Powerball. What do you guys use for balls to the wall metal? Im also interested in hearing this new VHT Deliverance head. What does Andy use on most of his recordings?