The dorco blue is a great blade in a Parker semi slant. Very sharp sharper then the dorco red. Also slightly more agrressive too but not by much. The reds are smoother to me for my face but would buy the blues again I kind of like it more than the Astra blue blade which are only aipghty sharper then the Astra. To me the dorco is smoother shave then the Astra but both blades neck and neck

Tried these for the first time today and was pleasantly impressed by how sharp and smooth the blades are. They come out of the box double-wrapped. Easily and very comfortably achieved a DFS without irritation. They're very reasonably priced and i will likely buy some more. I like these blades.