I have two Mojotone British 412s (one cab has G12M-25 Greenbacks in an X pattern with G12H-30 Heritage 55hz, while the other cab has G12M-25 Greenbacks in an X pattern with G12H-30 Heritage 75hz). I am getting a third Mojotone British 412s and am curious what other would contemplate adding for different sounds.

Amp: Synergy Syn-2 with OS modules, which are based on a Dumble ODS. Guitars: Various Strat or super Strat types, a couple with Gotoh GE1996T locking trems. Active and passive EMGs with SPC and EXG controls in several guitars. Two guitars with Duncan Distortion and an EMG PA-2 boost.

I am thinking maybe something paired with two Vintage 30s (G12-65 Heritage, T75, K100, stuff like that) but I am also open to other options/companies.

Hopefully speakers are considered "on topic" as an amp requires a speaker in order to be heard.