My 1960A has MIC G12M Greenbacks in it. They’ll never leave that cab. It sounds perfect. My Metropoulos 2x12 has G12H 75s. Lows feel a bit deeper, treble clearer and mids slightly more “balanced” vs the G12Ms. Not better or worse but different enough. Love that cab too. I also have G10 Creambacks in my Vibrolux thst I wasn’t thrilled with but after months of playing that amp and using my in 1960A cab in 4 ohm mode as an extension, those speakers have broke in a bit and are where I wanted them. Also excellent.