I run my fm3 right into a 5 watt tone king gremlin, set clean.
For cleaner patches I usually bypass the IR block, as the open back cabinet and 12” Alnico cream sounds so good and room filling
For higher gain stuff, I often leave the cab block on, as I find you can really dial in a lot of character through use of IR
Sometimes play it through an oversized 2x12 with GBs too, but usually that little tube combo
Did side by side with studio monitors, CLR etc, just sounds better overall from the tube amp, adds a little mojo or something as it’s just a beautiful blackface style circuit, and running with a big bottle kt66 in the power section