Look at this, which is in the library here.
http://www.e-cigarette-forum.com/forum/ecf-library/36180-wonderful-world-vaping-illustrated-guide-e-cigs-part-1-6-a.html
In my view, the choices are 3 based on what you want however, (at least that actually work) 510, KR808 or 4081.
Smokestik is a...