Depends on how you fly it - actually the inexpensive JR811 digitals will do the job! they are rated at 55 in ozs at 4.8 v -I have used them on 3D 2mm ZDZ40 powered setup -no problem - On the Fantasy -I assume(?) you are not into wild throws
the JR9411SA is reaqlly excellent and smaller -costs more tho 90+ in ozs torque. good digitals are really best for really precise stuff as they have far greater ability to hold a position The effective deadband is far smaller .
The 9011 are good too -but I like the digitals -- I used the 9011 on my Bucker Youngman (four ailerons) 1780 squares.