The Mach3 problem for me was never his blades rather effective. This is its lubricating strip LUBRASTRIP. The product is too viscous, too thick. Not only it is not nice to see long viscous filaments detach the razor when it takes away from the skin, but especially this lubricant prevents a close shave. When skin is dry and also the lubricating strip, shaving is much shorter. Once the strip is wet and it lubricates, a layer is deposited on the skin, covering the shortest hairs and it's over, you can not board correctly above unless flush skin ... The Other brands do not have this problem.