Resistance won't make any difference on the draw, but on the flavor and temperature of the vape.
Temco is a good source for large amounts of Kanthal. Check Amazon. For smaller quantities, which might be a better way to start until you decide on gauge, many B&Ms carry it. madvapes has several in NC (and online as well), and many other online shops carry it. But for smaller amounts, unless you're getting other stuff at the same time, a local store will probably be cheaper. (No shipping fee.)
Temco is a good source for large amounts of Kanthal. Check Amazon. For smaller quantities, which might be a better way to start until you decide on gauge, many B&Ms carry it. madvapes has several in NC (and online as well), and many other online shops carry it. But for smaller amounts, unless you're getting other stuff at the same time, a local store will probably be cheaper. (No shipping fee.)