ANd to complicate things....

If your comparing differnt types of blades, that throws it all off.
Like an apc 2blade may give better performance than a MA paddle blade.
But in a hover the paddle blade has better mid range.
and most multi blades are paddle in design.


As for models use what best fits you needs....
speed
torque
or just mutli for scale or clerance.
and for some price.

It can be costly to find the right prop if your trying to squeeze all you can from a motor.
good luck.

and of course when you fing the perfect prop.. you'll break it on the first landing[:@]