Indeed..wattage. Typing quick responses FTL
I find I like around 8 watts, it's odd I always end back there no matter how many things I try.
So using the average 3.7 volt discharge rate of a battery and shooting for 8 watts I make coils that are around 1.7ohms.(3.7*3.7/1.7=8.05). Seems to work well enough for me on any of the rebuildable atomizers. Genesis or otherwise. Gives me the option to use a kick if I so desire but also vape them straight off the battery.
Kick is a killer at lower ohms. Not only do you lose battery life due to higher amp draw on low ohm coils but you also lose battery life due to it boosting voltage to get to the set wattage. Double whammy.