in terms of modellers, what happened to the digitech GSP1101, mustaine was using it for years in to marshall poweramps live right?
It was a Rocktron Prophesy II
and he is still using it into the power section of a jvm410h
and as for comparisons listen to endgame
mustaines guitars are teh above setup
and brodericks are axe fx into his powerballs poweramp cant remember which side either is panned though.
However the application megadeth use is quite different to what a lot of people seem to do as a lot see to just go DI into the PA rather than a valve power amp > cab then mic'd