You are right about the 84 and 34, they put in JJ instead of the standard Sovtek becourse i think most prefer them.
But i think they suck at high gain, but are better for clean stuff.
I have ordered a midi uno and will try the DT editor before i upgrade the firmware, just to see if something changes.
If someone have some great high gain presets that sound good at band practice volume, please share them.