I'll be the odd duck
I've run all three
The AFX does feed the best and really puts it through
but for quality of threshing and rotor loss I'm still an old school standard rotor guy
After I set a standard rotor up the way I want its hydro forward (5mph +) in soybeans, then the problem is cutting them off
It just depends what crops you run mostly and how you have them set up, with any of the three rotors
In corn and really hard-threshing wheat its its hard to beat a standard rotor