I started out on my quest for the best electronic cigarette. After spending over $500.00 trying out different brands made by smoke everware, no joy, etc., I discovered that these E-Cigs had serious design flaws. The flaws ranged from a hard draw, to batteries that failed within a few days. I then discovered the best of the best, the JOYE 510 and eGo. They have an easy draw, like a real cigarette, produce enormous amounts of vapor. They also charge "on the go" with the PPC Personal E-Cig Charger and allow refilling of their cartridges with any flavor you crave, inexpensively.