I was a 2 PAD Full Flavor Smoker, but my wife was a PAD Light Smoker both for 30+ years. We started @ 18mg 80% PG /20% VG but it was too strong (Throat Hit) for the wife, and with some juices even for me. So what we've done is gone with 12mg 65%/35% and then bought unflavored 65%/35% 24mg nicotine. You can buy unflavored nicotine any pg/vg % and any Nicotine mg up to 36mg from Mount Baker Vapor dirt cheap. With the 12mg E-jucie & 24mg unflavored, using a 1 1/2 ml tank --- add 1 drop to get 14mg, 2 drops 15.5mg, 3 drops 16.5 mg, 4 drops 17.5mg, 5 Drops 18mg, 6 drops 19mg and so on. (can also use 36mg unflavored if you think you want to adjust higher) It's also a great way to ween down on nicotine when we lower eventually down to 6mg ... can vary up and down. This way we don't waste a lot of money on E-Juice then find out the nicotine level is to strong or too weak.