Sorry if this has been mentioned before. I know the Mercury edition is based of Marshalls. Plexi, JCM, etc. What about the Iridium? Is it based off of Marshalls or different amps? Even though I'm not really a metal player I do prefer higher gain tones with a tight bottom. For example, my EVH 5150's Blue channel was my favorite tone out of any amp I've owned in 30 years. Of course I sold it like a moron but that's another story. Still haven't decided if I'm going to go the Bluguitar route or not. If I do, I'll probably order both versions to compare and return one of them. They're small so shipping won't be that bad.