I just purchased my first 26650 mech mod, looking for the best battery whether it be MNKE or Sony. I've heard good things about both, but I'm not sure of the best place to purchase said batteries for the best quality and price. I was leaning towards the MNKE because they have them on Amazon for $15.49 for a pair, but I've heard also that these batteries are over a year old. So again does anyone know definitively the best place to find the best battery? i.e. longevity, performance, etc.