Yesterday I tried Astra blade in the Muhle R89 razor. I found the blade to be a bit rough.. Especially at the beginning. It pulled the whiskers a bit, something that didn't happen with Feather or Iridium blades. Some say that it is a sharp blade, but I don't know.. It did shave close to be honest. But it wasn't particularly friendly. I remember when I first tried the Astra, it was with a Merkur HD razor. That shave was the roughest!! I got some serious burn, like I never got before. I then tried the Astra in the Feather Popular and it was much better. I got to admit that the Muhle razors seem to me MUCH MUCH better than the Merkur ones. And this only by the way it shaves, never mind the finish and looks. Great razors:happy088 Anybody else tried Astra in Muhle or EJ razors?