Treet Silver. I used one of those and it gave me really bad irritation all over my face. On a recommendation from some others I gave them another go. This is day four on the same blade and still just as smooth as the first. I can only think I may have not centered the blade correctly before. The Treet Silver seems to have more side to side play in my 3 piece Razor Rock. I just took the extra time to make sure it was centered and was rewarded 10 fold.
John