I am sure that there is a thread on this somewhere among the forum, so if this has been answered ... forgive me. I went to my vape shop today to look at some different model types. I currently have the standard three click eGo setup and laugh if you will, but I find myself at time using two of these at once to get the hit that I want. I diagnosed myself as needing something that gave me the hit I needed where I wouldn't have two units coming out of my mouth like fangs. So I saw the eGo variable battery model and wasn't sure if that gives off a good hit, or any suggestions on what model would.