This is my first device with all the fancy bells and whistles on it and so far I'm in love. I'm 1300 puffs in after about a week and the battery life is great with 2 LG HG2 or Samsung 25rs. The menu is in-depth and easy to use. I like the preheat function, able to set the wattage and the time it hits that wattage for (have mine set for 70w @.5 seconds then 55 thereafter). Soon as I have some disposable income I want a few more for safe keeping. I got the gunmetal version and am not gentle. So far looks gorgeous.