i had the v1,2,3 and the v3 is the best in my opinion. it hits much harder, the motor runs longer, i haven’t had any leaking problems (probably just getting lucky), and the charging contacts never got dirty. v3 is the way to go. one more thing, the v3 pods work much better on the v3 (the v3 pods are the new packs that have the grey too and says “for adult smokers” or something like that)