I had the first one for about 25 flights, then destruction. It went in full bore after trying to pull out of a downwind harrier. #2 went in while trying to spot land cross ways on a road 8ft wide, got it once, messed up on 2nd attempt. #3 got gutsy and flew too tail heavy. You know what happened there. As for the gross of twists, I don't know if that would last a year or not with me in control. Or out of control is probably a better statement.