Had my first ever shave with an Astra SP today and it turned out pretty well. I took off almost a 2 day growth of beard with it. The blade performed adequately but I’ve used better ones before , like GSBs and Gillette Yellows. It didn’t feel super smooth but not rough in anyway.It was decently sharp. I have some Astra SS that I use at times so I will be comparing the 2....Great thing is the economy of using these blades. I paid only 6.67 for the 100 I bought.