For me, Astra SP blades are better (sharper, smoother) than Derby blades. Derby feels about as sharp as the Dorco ST-301, but the Dorco is much smoother for me.
Astra SP is my normal blade right now. I've used Derbys in the past and my opinion is they are not as sharp as the Astras.
Derby's are obviously soo good, NOONE will take me up on a free 4 pack w me paying the $.42 cents to mail...lol
i had no issues with Derby's either, and i am on my first Astra------derby's are very controversial , either one hates them or loves them- i shaved one side and felt like it did not shave anything, but i felt and the stubbs were gone, actually very smoothI happen to like Derbys, I also shave with Dorco St301's. I do have some astras on the way though.
either one hates them or loves them