As a smoker of both cigars and cigarettes I've always preferred stronger and full flavored products. Now that I'm just starting to vape I am looking for the most powerful nicotine I can get. I see on some sites that the highest level of nicotine seems to be 2.4%, which, I assume, is the equivalent to 24mg? At this site (Smokeless Image | Only The Best Electronic Cigarette | Volt - Basic Starter Kit - Starter Kits) their strongest concentrate seems to be 2.4% and it's rated as XHigh. In contrast to that, on this site (http://www.........../shopping/products/5-E-Cigarette-E9/81-Electronic-Cigarette-E9/) their rating system is as follows: (High -18mg.) (XHigh - 24mg.) (XXHigh - 36mg.) (XXXHigh - 48mg.). I have ordered some product from this company, but the shipping time is out to several weeks. Also, I haven't started using e-liquid yet, but I'm thinking that that is where I can get the strongest nicotine. I am reluctant to start with liquid due mainly to a sense of overwhelm and intimidation about all the different ways to do it, how to refill, etc. What I'm looking for is a 2-ecig that has very high levels of nicotine density, throwaway cartridges with the option to re-fill if desired, and long battery live. Does this beast exist anywhere out there?