Double edge safety razors: if I had to choose only one, Rockwell 6S is enough, but they really perform different and have different feel. I mostly use four or five on a daily basis, but it is more than necessary.
Also, fountain pens: it’s pretty much the same, TWSBI pen(s) would suffice, but there are too many brands and models with different look and feel, hard to choose only one. Plus in case of pens multiple ones allow for use of different inks at the same time (those I also have multiple compared to the amount that would suffice, even in the same colour)
Double edge safety razors: if I had to choose only one, Rockwell 6S is enough, but they really perform different and have different feel. I mostly use four or five on a daily basis, but it is more than necessary.
Also, fountain pens: it’s pretty much the same, TWSBI pen(s) would suffice, but there are too many brands and models with different look and feel, hard to choose only one. Plus in case of pens multiple ones allow for use of different inks at the same time (those I also have multiple compared to the amount that would suffice, even in the same colour)
… you shave 4 or 5 times a day?