I bought an ego one from a vape shop this past wekend. Second day I had it the tank leaked no matter what whether it was full, check to make sure the coils were tight and what not. Called the shop and told them. They advised me that sometimes the do leak but werent willing to exchange or retun it and she even remembered me. So Im out $50 bucks. I had to buy an subtank nano FOR $35 and guess what? Not even a drop of leaking. Now Im gonna go buy an istick 30w Friday. This seems to be more hassle than anything. I apologize for my rant.