Started on the 1st generation E-pens which were great. It stopped my 30 a day Rothmans addiction! A year down the line and I've now upgraded to the E-tank. The refillable liquids last much longer than the E caps and most stores don't stock the E caps, so it's much easier to have the liquid at hand ready to top up yourself, instead of relying on shops. Also with the reduced nicotine amounts, I'm now down from 18mgs to 10mgs, so slowly but surely, it's having a beneficial effect on my health and improving the enjoyment of vaping. I would suggest buying two E tanks though, as it's always good to have one charged on standby. The instructions for the E tanks could be a little more comprehensive as the instructions are difficult if your new to it. Just remember to fill the outer part, not directing down the middle!!!