I like razors, and I have a bad habit of buying them. I set my first limit at seven; since they come in seven day sets and I could use one each day, I was able to make a reasonable argument for seven. Now, I want to expand my rotation, and I'm having trouble picking a number. I could do 10, because that is an even number. I could do 14, because that is two sets of seven. Or I could do as many as I can comfortably store (razor box + razor roll).

I believe the old sets of seven were because they were luxery items, and writing the names of each day on the spines was a nice touch. In all honesty, who would tell a gentleman that he must use a certain razor in a certain day? I used to stick to my rotation of seven, but sometimes I was just in the mood for a different razor.