I recently purchased a kit to make a 3.7v box mod and all i can say is wow! I can't believe what a difference this is compared to my regular e-cigs. Plus the price is a lot better than that of my other e-cigs. I paid roughly 27 bucks ( box mod 7, 2 batteries 10, and charger 10) compared to the 60 to 100 i have paid for the other ones. Haven't tried a LR atty on it yet but i am sure that will make it that much better.