The only thing that may slow down my spontaneous buying as in the case of that beautiful Reuleaux 200 is that I tossed a God 180 S 220 watter using that same 3 18650 setup ..... The 180S stripped the battery vinyl at each end and I had over a handful of serious shorts that were so hot in one case I had to lift the unit off of a carpet with a pancake turner .... The other thing I noted is that I'm a real freaky all day vaper and got only the same 3 hour duration from 3 18650s as I do from 2 18650s in both of my eleaf Istick 100 watters and the 18650 brands do not matter, the times are always near the same ..... now admittededly the vape units are hardly out of my hands for more than 15 minute intervals in an entire day .... I'm retired as well so vaping is never interrupted.