I'm currently using a volt 78 mm battery. I'm a total nube to this vaping stuff. I'm thinking of switching to smokeless images spinner. or something else that has the vv feature and is reliable yet cost affective.also, is there any kind of delivery system such as tanks or anything that I won't have to keep purchasing? something I can refill and refill without having to buy or adjust anything. if not. what lasts the longest for a heavy vaper that I also don't have to tamper with. please help. love the feedback so far. thank you all in advance.