Todate, I have only a positive experience of CF props. The reason for purchase was quite simply that the quick release props fitted to my Inspire 1 v1 did not give me the confidence they should re their departure from the aircraft in flight. Moreover, as a lifetime flyer of RC helicopters and fixed wing aircraft, I would never use a flexible prop as they are very inefficient. I wanted a prop that I could screw down securely on the motors. I bought Xoars 1345 GF from the USA, expensive at $250. They came with the self-tightening adapters, which I am sure are fine but I prefer not to use them and screwed the props straight on the motors. I feel much happier with this system. As to flight performance, I really don't think there is a great deal in it. For me its all about safety and getting maximum efficiency out of the aircraft. I was warned by a couple of my friends that CF blades could give vibrations, sure they could if they are not balanced. You get what you pay for, the Xoars are perfect, the aircraft is totally vibration free, and rock steady.