Because of my neck I can only shave once every four or five days, by then the rest of my face is a full grown forest. I have a sampler pack and have been through most of them but the pack I bought seems to be all the low end blades. Derby, 7 a.m etc. I have tried to shave twice with the same blade but found I need a fresh new blade everytime. Which is no problem for me as I had to do the same with M3 cartridges.$$$$ So, what would be your blade of choice to mow down a forest while still providing a smooth shave?