I have been using a Mach3 for a couple years now and am convinced it is the best razor a man can buy, but the replacement blades are just too expensive when I usually get around 5-6 shaves per blade. I recently ran across a new product called EdgeSaver and have been using it for 2 months and have only gone through 2 blades. It also gave me a much smoother, less irritating shave. I gotta tell you…I am definitely impressed with EdgeSaver. I highly recommend it!