I use clear, non sweet, 50/50, 6 mg/ml nic & vape a nautilus 1.8Ω head between 13.4w ~ 16w in a nautilus & 14.4w ~ 20w in a kabuki.
My wife vapes the same at 12.4 ~ 14.2.w.
It isn't a competition to see who can vape at the highest wattage.
Use whatever works best for you & don't get caught up in the watt chasing game.