I use both the Kanthal 0,16 & 0,20. 6 turns of the 0,20 with 4gf gives me 1.7ohms & 5 turns on the 0,16 gives 2.8Ohms. But still is a learning curve and it keeps varing depending on the length of the wire. I normally cut 3 to 3.5 inches.
Amazing vapour , flavour and TH.