These blades puzzle me. While the other reviews describe them as being relatively sharp, I was downright supprised at how much these things seem to pull, even from the first shave. I almost changed blades in the middle of the first use because it felt dull, but none the less, it gave a close shave, so I gave it a second shot. I'm not entirely sure what is going on for me or with the blades--I'm getting close, smooth shaves. Despite this, I'd put them behind Crystals, Gillette Yellows, and Wallmart American Personas in terms of the sensation of sharpness--the ease of the cut. Longevity for me seems to be on par, or a little worse than the American Persona blades--two to three shaves seems about all they're good for. I get a good shave, but I don't plan on buying any more, just because of the tugging when I've used them