One of my favorite bass amps has always been the Fender Showman. Years ago, someone told me that the showman was basically a Twin w/o reverb. I have never used anything MTS live on bass, but I have done a ton of recording with modules. My favorite is the JF SuperClean. It is nice and clean and very warm. If you want a little grit out of it, it is a smooth, warm kind of grit, not unlike an Ampeg. I have a VooDoo Twin mod, but it was distorting way early and have sent it back to Trace to be looked at. I had a Blackface module, but they never did get the fender vibe right in the stock module. theoretically though, if the Twin and Showman were the same amp, a well modded blackface should kick some serious bass ***.