I still use 18mg after more than four years of vaping exclusively. At that level my total consumption of juice is now rather low. I am not intending to start a flaming war but I think fewer inhalations of VG, nicotine and small amount of water is a better compromise rather than lower nicotine while inhaling more juice. Again no flame wars but to me less vapor fewer inhalations with higher nicotine is my idea of risk reduction.