It's not all about the resistance as you've noticed. A lot of the production of vapor has to do with the actual physical properties of the coil (is it a touching wrap, spaced, stove top, clapton, etc), the wicking, the e-liquid, the inhalation technique, the amount of power you apply to the build, the device you are building on as well as the actual resistance.
With the higher powered devices out there now, it's almost unnecessary to build so low. I usually stay around 0.5 on my drippers now, and get terrific flavor and vapor.