An outer shell with 7 inner strands! One rated at 550lbs and available in four or six colors, and another actually rated at 450 but called 550 paracord and available in 32 colors.

An outer shell with 7 inner strands made of two braided strands!

An outer shell with 7 strands made of 3 braided strands! I like this the best, but I've only heard of it.

Who makes the real mil-spec paracord, and where can it be purchased?