There's some "obsession" to be with the hip crowd and go as low as possible, something that I will never understand considering that the lower the ohm, the larger the risk of having a bad situation. The fascination with coat hanger wire some have, has always puzzled me to be honest.
I stick to building on 26 to 30, depending on the deck, and moved away from khantal and been with NI200 and SS316L for quite a while.
There's the factor of if you're with a single or dual coil that matter also.
I can do builds that are usually 0.2 (and more than low enough) up to 0.9, in either single or dual
coils, and by adjusting my wattage and TC (as I prefer it), there's not really much of a difference when you do your builds correctly.
I tend to stick to dual 26gauge SS lately and easily go with around 0.4, and it's been as good as it gets.