I've been using the Personnas that come in the white plastic pack with 5 to the pack to the pack. I've been getting these from the .99 Only stores. At .99 cents plus tax it comes out to about .21 cents per blade. Cheap yes but not as cheap if you were to buy say Derby's in bulk. So I rated it 7 there. But for the rest of it, all 10's. I get pretty much get a BBS with 2 passes and maybe a touch-up with these blades. I get a weeks worth of shaves with each blade and no irritation. I had bought a sampler pack from LetterK a short while back and these are as good as any in the pack. The Personnas have worked far better than the Feathers, which gave me weepers and nicks all over. I've found them to be equal to both the Derby's and the Bic's. And while I will be ordering some Derby blades soon (buying bulk) I will keep these in my rotation. And I would recommend them to others.