My power mach 3 died and I was looking for another. tried this one. the first shave nicked and burned. Knowing that I got multiple shaves form the mach 3 I kept going. After the 3rd shave things got better! but not great, just ok. I have a beard and like to shave every other day. When new this does not work so good but after a couple of shaves, again it is ok. At the cost of these blades I keep going, and going. I lose track of how many times but it is a lot. I shave in the shower so after the first time with the shaving cream I just use lots of water to lightly go over it a second time.