i too just made the switch from the AX8 to the III.
I (like many) had been waiting for the FM3 for however long its been since they announced it but jumped at the opportunity to pick one up locally Friday morning from a fellow fractal board member.
i was instantly blown away by the "feel" of the sound.
super stoked, already put in maybe 25 hours of work into it since Friday, trying really really hard to make 4 basic presets to debut this thing at our gig this Saturday.
i also am not bringing over any of my presets from my AX8....kinda happy i haven't (not because i didn't enjoy them) but as mentioned by another user it forced me to learn more within each setting.
i just checked usps & my FC6 i ordered from another forum member that was scheduled to arrive Wednesday should now arrive tomorrow...(yay for extra time to set it up)
i intended to keep my AX8 as a backup or at home rig for myself & our lead guitarist (since we both used AX8's) but after hearing the differences in the III we both decided to (once released, & they call the people on the wait list from that first hour) Sell our AX8's & get an FM3 as a backup. He's hoping to get his III by end of Q1 in '20