This one has bugged me for a bit since I've looked into multi rotors but why are graupner e-props so sought after? In all my research and testing I've seen
APC' are the most efficient in watts per amp
Xoars produce the most thrust but at the cost of 10% amps over a comparable APC.
Graupners produce about as much thrust as an APC but the same amp load as a xoar.
So what is the draw with them? Most of the APCs require just a small amount of balancing and are no different than xoars when it comes to balancing. At ten bucks a prop a xoar prop strike really stings. APCs can take a hit without breaking.