If you think, (now), you're gonna like the built in atomizer, (carto), you can get that with a longer lasting, (runtime between charges), battery, (Batt), in several models of eCigs. Those models that resemble cigarettes, regulars and 100mm's, can be fitted with a carto. But, the batt runtime is pretty short. Means you then need to carry extra batt(s) in a PCC, (Personal Charging Case), or have some other way to charge during the day. Probably far and away the majority of people starting out have gone this route. Most wish they hadn't after learning of other alternatives that are available now. Myself, I'm now using an eGo class clone. This class uses a somewhat larger diameter batt, and either a 510 atty/cart, (three piece), or 510 cartomizer, (Carto), in this case then 2 piece. Rather, it's native to that size/threading. It's possible to get adapters to connect other threaded cartomizers to that batt. I don't want to fog you with a bunch of crap that's going to just keep you confused. Like I started to say, I use an eGo class battery, w/510 cartomizer's. One of these batteries and one carto will last me an 8 hour shift at work, (30 min drive to/from & an hour lunch). Taking breaks 5 or so minutes once an hour. (And I still carry a spare batt and carto just in case). My biggest problem when I first started was getting a larger selection of 3mL samples to test, to determine what strength nicotine I needed and which flavors I preferred. And that my friend, is really all trial and error. I gave the cigarette look-a-likes to family members that expressed an interest in wanting to try eGigs. I'm sure others on this forum, more qualified than I, will have something to add to what I've suggested.
Good luck with quitting,
Cheers,
otrpu