I am one of those people who doesn't usually care much about things like which prop I'm using. While I will see a difference between an 11x6 and an 11x7, I don't usually see a difference between brand X and brand Y. But the first time I used a Graupner, it was like - WOW.

I don't know if it's the shape, the stiffness, the weight or whatever other factors are involved (nor do I care). All I know is those things pull like a gorilla.

Another nice thing about them is that they are heavy, which makes the prop act like a flywheel to give you an incredibly low, smooth idle