I agree with these guys, interesting talk overall.
I had the FM3, Helix Floor and QC in the same room and ended up settling on the FM3, which later got upgraded to the Axe-Fx 3. But realistically the FM3, especially with the CPU usage improvements of FW 6.00 would do enough for me. I came real close to keeping the QC but ultimately decided that I can just sell it, buy it again when it gets to where I want it to be. Still hasn't.
The main thing that made me sell the Helix was to do with form factor. HX Stomp is not powerful enough and compromises heavily on UI, Helix Floor/LT is too big to put somewhere higher up and if I got to go rack, might as well go Axe-Fx 3.
I can't use floor units anymore due to medical reasons, would pretty much have to sit on the floor to work with them, bending over is no good. Same reason why my pedalboard is remote controlled via wireless MIDI from the floor and the actual board sits on a desk or stand - plan is to make it operable more like a movable mixer or something.
A the moment Line6 kinda doesn't offer the right device for me so I stick to Fractal and use it with Axe-Edit most of the time.