"The cords made today are very poor compared with what was made in the 50s and 60s, Many machines 50 or more years old still have good cords on them, they had cloth around the wires instead of whatever that stuff is now, the rubber covering the wires was much softer too."
Indeed, my Hoover 612 still has its original ribbed cable and given that the machine was manufacturered in circa 1949 that's pretty good going. There are no splits in it either.