Now, some find the red pack smoother, other don't. I do find Astra better than Personna because I get more shaves out of them. They feel sharper than Derby or Personna to me. They are very close to Feather but not quite.
Lately, I tried Kai and that blade is pretty sharp and smooth!!
having had and shaved with both for a long time, the Red packs are much smoother while the ASP is sharper. In fact, I have moved the Red Packs to my third favorite blade behind Feathers and Gillette SharpEdge 7'O Clocks. price wise, they are first.
Now I just have to find the razor that that works best w the Gillettes.