Why are you using the 2 blade V-530 propeller and not the MT or the Hartzel three blade propellers?
A couple of reason, number one being cost. You can still get a used V-530 for 1/2 the price of the MT or Hartzell. Another is ease of owner maintenance on the V-530. Also if we are out in the bush and need another propeller it is much easier to get a whole 2 blade into the back of an airplane than a three blade, without taking it apart.