Absolutely agree with jereader. I've been through a handful of the smaller jobs (still keep them for backup), but about the time the Janty eGOs came out I got sold watching a video apparently made by the manufacturers, demoing a prototype. I was about the try the JantyStick, went with the eGO instead. That was over a year ago and I haven't looked back.
My sister's boyfriend got her a kit from one of those designer labels, hardly ever uses it. I tried it out, the damn thing's cracked already. I bought some of the earlier generic mini models for relatives and a business partner, who rarely use them. I'm convinced that had I gotten them eGOs they'd be less likely to be sucking on cancer sticks today. I myself haven't lit one in 16 months.
I've also noticed that the generic atomizers I seem to have a fistful of in my junk drawer, all clogged beyond redemption, last nowhere near as long as Janty's do. The eGO lives up to its advertising, is ruggedly made, and has a battery I'd like to put under the hood of my truck. The only caveat I'd have is the charger. Tighten the battery into it till the red light comes on and the battery button flashes, then just a tad farther, no more. I overtightened my first one and twisted the wires loose. No biggy, a replacement chargers costs about eight bucks. Problem was, they back-ordered my order for about three months for no reason I can fathom (hence the value of keeping all those old minis lying around).
A final note: When I finally got the right e-cig (and a flavor I liked despite FDA interference), I stopped keeping up with the latest tech (or experimenting with new flavors). No need, I'm still not smoking cigarettes. Reading this forum I see there's a lot of innovations out there I know nothing about. Could be I'm using a cherished old flintlock after percussion cap technology has been discovered. But jeread's right, in my opinion, start with a high-end model, avoid needless disappointment and possible failure in your early efforts.