MERKUR MK 78C Adjustable Double Safety Review

I have been shaving for 55 years. I started with a Gillette dual blade razor and then moved on to 2, 3, 4 and finally a Gillette 5 blade cartridge with smears on a dual head razor. The shave was good, the cartridge lasted two weeks in the double shave technique (forwards and backwards). A cartridge with 5 blades costs between $3.50 and $5 depending on the discount. Recently I was visiting a friend who has been my shaving guru for many years. He was promoting a double-edged safety razor from…