Ok, so I am, for the most part, a nicotine lightweight. Before I began vaping, I smoked a maybe a pack every 2 weeks, and I could get a significant buzz off of one cigarette. The first juice I used was incredibly low quality and quite disgusting; it was Vapin Plus cappuccino flavored, with 1.6% nicotine content (I'm assuming that's equivalent to 16 mg nicotine, which I've heard is between medium-high strength). I did not achieve any kind of nicotine feeling or even relaxation after an hour of heavy use; it just upset my stomach. I then purchased 2 flavors from MBV that were 24 mg nicotine (i think Strawberry Shortcake and Spring Break) which I allowed to steep for 2 weeks before using. I definitely noticed a nicotine effect from those; however, the vapor is far too harsh for my likes. After an hour of not using it I can't vape it without coughing, and I have to build myself up from smaller hits to bigger hits. Not to mention it seems to ruin the flavor, in contrast to lower nicotine content juices. I'm using the iTaste MVP 2 with iClear 16b tanks, but am soon upgrading to the MVP 20 watt with either a kanger protank 3 or aspire nautilus. My question is, why can't I achieve the "nicotine feeling" from a 16 mg juice? Is it just because how low quality that Vapin Plus juice is? My friend who is more tolerant to nicotine than I am can get a buzz off of 6 mg juice. I don't understand it.