Hummm!! I guess they all have their ups and downs. I know the guys at our field swear by the Karbonite gears. I guess it depends on how they hit if they will withstand the impact. I can tell you when that plane went through the roof it bent the prop shaft at almost a 45* angle. Put a hole in the roof about 6" round. The only thing left on the roof was the wings. I had it covered in coverite fabric and it was not torn, but all of the ribs were no bigger than toothpicks inside the covering.

By the way it was my plane but I was not flying it.