Hi mike,not quite the same as your situation but it may/may not be of interest to you! I had a super 12t and then brought a big twin gen 3. The bt is defo a’bigger’ softer/fuller sound/tone I suppose whereas the super 12 was more’in ya face’ middy.harsher if you like,less ‘oommphhh.interestinly I still found myself using the super 12 more as it seemed to cut through and I could hear myself better onstage.moved them both on in the end .i now have a bb3and a super midget .A more flexible solution for me I have found.Either one or t’other depending on gig situ and together they sound somewhere in between ,the super 12t and the big twin gen3 fuller sounding that the super 12t .In reality the bb3 more than covers what I need .im talking pub gigs and theatre shows aswell.How’s that for a technical response 😂!