i seem to have trouble with bottom coil tanks couldn't get on with the evod. and had problems with the iclear 16b which was suplied with my mvp. so ordered a iclear 30 s WOW the taste this beast offers is fantastic no dry hits or flooding after three days use. love the adjustable tip the only down side is it doesn't do to well in the mpj (miles per juice) it drinks the stuff but its worth it for the amount of vapor and taste at a fairly low power setting v 4 w 9 thinking of getting a vtr as well as they look more robust for sticking in your pockets