Because of all the talk about these blades, I took a good look at the blades when I went to HF this last time. I am using the blades and am happy with them. When I took a good look before buying I saw in some packages that there were warped spots. I just looked and did not buy those packages. There will always be bad in all things that are made. The good out do the bad and for a buck I can have a new blade.