Get a Megalodon, can have it in mini-Don mode so it's smaller in the hand (closer to giving up an analog) and you always have the option to mix around the batteries to up the ante later on if you wish.
Have a look. Megalodon (The Don) e-cig mod reviews
YouTube - THE MEGALODON ELECTRONICSTIX.COM
3.7v with low resistance cartos is the sweet spot.
Have a look. Megalodon (The Don) e-cig mod reviews
YouTube - THE MEGALODON ELECTRONICSTIX.COM
3.7v with low resistance cartos is the sweet spot.