Based on actual experience and not lofty dreaming ( that would be an old 100w Plexi in that case), then its the JCM2000 DSL50.
Of all the amps I ever owned, its the swiss army knife every time: just plug straight in, tweak the dials and you can cover just about any ground you want. You want Metal? Its got it. Need that old classic Crunch? No sweat. Want to go for a beautiful fat crystal clean? Switch it on over! Literally any style one can think of, can be accomplished if you wish.