My take on the Fractals for live use-
FM9 if using w/ no outboard pedals. The footprint is big enough with a couple expression pedals that anything else is going to be taking up some stage room. I ultimately decided to leave my FM9 rig as it is, I might throw a Freqout on the board, but the pedalboard I built for it is 32” long and there’s maybe an inch of wiggle room. A 3’ board isn’t always going to be stage friendly and stacking things UP would be more logical….and then you’re looking at stepping on pedals 8” off the ground and above the FM9. No taints.
AxeFX if using outboard gear, because it can all sit in a rack offstage with an FC6 at the front of a stage.