As for the "why 6 wraps" question, it's because that would be a best fit for one of their own atomizers (physically). VV's wires and coils are as good as any machine-made coils, but the pre-wrappped coils are definitely designed for the atties they make. (The resistance isn't so much a thing, since they make the "same" coil in multiple different materials for the same atty. There's a target, sure, but if a planned nichrome needed an extra wrap or two to get up to a target resistance, they'd simply make the default coil for the atty out of kanthal instead.)