I use the PolSilver SI often. Blades and razors, as you know, are very personal as to what each of us likes. I have always had an excellent shave with these blades. I normally use the blade in a Merkur 34C. They are quite sharp and I find the second use to be far smoother. I typically shave three times a week (now that I am retired) and toss the blade after the third use. Good review.