Bought this after seeing the video for it on Youtube. Having broken the arms off of two frames, I really liked the idea of just needing to replace a plastic bolt and re-attach the arm. I got this two days ago, and I like it. It does work as advertised, since I got stuck in a tree and broke an arm off when the frame fell 30 feet to the ground. Just replaced the plastic screw, straightened out a blade and was back in the air again.
One tweak that would help with confusion would be a set of directions for assembling the frame. There are raised circular spots on the arms and I was unsure if they were suppose to be up or down on the arms. Second, directions would have also let me know that the factory holes for the ESC board are too small for the provided plastic screws. The holes do need to be enlarged slightly to make them work.Rating: [5 of 5 Stars!]