Has anyone played these back to back? How would you describe the sonic differences. I understand the technical differences. And I have see both of Pete Thorn's demo's. But when you are next to them dialed in at about the same gain (breakup) and volume, how are they similar? How different are they? Hey Pete, if you happen upon this thread, I'd really appreciate your input. I have the 18 and love it for the most part. I don't really need the extra volume or headroom of the 30. But, how different is the vibe? Are the EL34's going to make that big of a difference? Thanks all!