About a month ago I purchased a tank that has replaceable atomizers. The only two available that I've found so far are 1.5 ohms and 1.8 ohms. The 1.5 was in the tank when I bought it, and the extra one (which I'm using now) is 1.8 ohms (which I didn't know at the time). I'm still fairly new to this and I've never been concerned with voltages, wattages, or ohms. As long as I only have to depress a button on my eGo battery to toke I am content. After this 'hardware upgrade' I did some basic ohms law self instruction when I was about to order some more atomizer's and I had to chose between 1.5 and 1.8. This is my conclusion: a 1.5 will burn 'hotter' than a 1.8, which will have the effect of 'more juice, less battery', correct? But now that I am using the 1.8 ohm atomizer, the opposite seems to happen. The juice concentrations and flavor used with both has been the same, and I am confused.