How would you compare the Pandora to a 101B or any other XTC revision?
I've got a 101B and I think it's capable of a lot more mids than in your video, but I'm sure that's just how I run mine and what cab I'm using. I also think it can get a lot flubbier than the others with the possible exception of the Helios, but again, that's just in Plexi mode.
I can see how the standard Shiva would be more mid-forward and looser. I've got a 20th Anni Shiva and, to me, it's an almost perfect '80s metal sound. It's more low-mid focused, but remains pretty tight.
The comparison of the Rev Green stock vs tight mod was great to hear! I've got a stock Rev Green, so am familiar with that sound.
Definitely agree that the Helios is more Marshall sounding. It's more upper-mid focused and can get loose but doesn't have to be. It's still got enough Bogner in it to sing almost as well as the XTC. I've often thought the Rev Green sounded more like a pissed off Marshall than a Mesa DR, so your comparison of the Helios being between the XTC and the Uber makes a lot of sense.
From your vid, I liked the Snorkler the best. I've got one of the new 50w and it sounds very similar, but not quite as big or mean as your 100w.
Great vid! I've watched it several times!