Looking at two fan systems it seems normal to have the fan near the condenser outlet to stay on and cycle the other one. Theory being the refrigerant leaving the coil might heat up a bit if you cycle the other fan or liquid might sit by the inlet to the condenser (so I've been told).
Saying that, AC with an inverter pack will keep the top fan running to cool the PCB and cycle the lower fan so kind of blows that theory out the water a bit.
So, for the purist fans near the outlet on, fan near the inlet cycled.

Cheers,
Andy.