I could never get an atomizer to last for more than a few days before they clogged, even though I drained them every night and cleaned them with alcohol. I've noticed that since I built my little USB power adapter, that the lifespan of my atomizers has gone from days to weeks. As an added benefit, the throat hit is much more satisfying and the push button activator gives me more and better control. I chalk it up to that extra volt or two. Not sure why I posted this. Just for input or similar experiences, I guess.