I'm looking for the best slim model ecig. It doesn't have to be a mini, but just looking for the best one as for Vapor Production, battery life, price. I know battery life is going to be minimal on a slim model, but just a suggestion on one that has decent battery life for it's size. doesn't matter what connection either, I know 510's are preferred because of it's versatile size, but it really doesn't matter to me, I just want something that is going to work better than the model I am using at the moment. Thanks a lot for reading!