Actually, props are a very personal thing due to the many variables as to brand of prop, the weather conditions, and the plane it is on as well as your perceptions.

It is none of our business which prop you use or why you use it as long as you are happy with your choice.

I personally would not give much thought to whether you choose to use a 10-5 or a 10-6. In fact, the APC 10-5 appears to be made better than the APC 10-6.

Often a certain prop will not seem right on the test stand but up in the air they may seem better on certain planes.