I'm going to give facts here, you can draw your own conclusions.

Last week, I was flying my OS .55 AX powered Deception 40 and in a down-line with the engine turning very high rpms, the prop let go. The firewall was ripped from the plane and the cowling was trashed. I brought her back dead-stick and landed with the engine, firewall, and what was left of the cowl hanging from the throttle cable.

I thought I just pushed it too far.

Today, I was flying my new Curare. At the time, I was just flying straight and level at around half power. There was a loud vibration, the canopy flew off, and the engine shut down. Another dead stick landing. Checking the plane revealed that the prop had failed at the root of the right blade in an identical manner as the one on the D-40. This caused my engine mount to fail. Fortunately, there was very little damage to the plane.

Both props were purchased at the same time from my lhs. They are both Master Airscrew G/F 3 Series 11-8.