28/36 awg Kanthal A1 Clapton 3 mm ID wrapped 5 times does well at around 0.30 ohms. Gives me a nice cool vape but warms the juice enough. I'm also keen on plain single strand of 28 awg Kanthal/ NiC80 3mm ID wrapped 5 times, and it hits about 0.30 ohms as well. It's in the consistency of how coils are built which allows for keeping Clapton & plain wire both around 0.30. I like fairly tightly lain coils, not micro coils but still pretty tight. I think many prefer spaced out coils. Not a thing wrong or right in either method. Find what suits you and enjoy. I hated building micro coils.
Also ---> !WARNING! He is now vaping on a Dead Rabbit SQ. The Purge has began. Farmers lock up your sheep, the pack's mighty hungry!