Because I was looking for a 'direct replacement' of a cigarette, I opted for Modern Vapor's Sidesho on my first go-round; this is much like the 'Blu' and other small form ecigs. I suffered through about 6 months of that and started smoking cigarettes again.
I picked the Sidesho back up a few months later and tried my best, but it just wasn't working. Then came my savior- the eGo Tank with passthru. SO simple in comparison to my previous rig; the eGo is, quite literally, plug and play.
With the small form ecigs, you have to diddle with equipment constantly- seeking plugs and USB ports, carrying multiple batteries. I won't even go into the carts and the foam mods and the blah blah.
My eGo 1000mAh passthru lasts me through the day. I plug it in when I'm in the car or on the PC, and unplug it when I'm on the go- it hasn't died on me once. The type B tanks last all day- no fumbling with little leaky jars of nicquid.
Making the decision to quit smoking is hard enough; take it easy on yourself by choosing a simple setup to get you going.
I would recommend the eGo 1000mAh passthru with the type B atomizer and tank system. I prefer buying piecemeal as opposed to starter kits; if your budget will afford it, I would recommend an extra atomizer (I also splurged for an extra passthru- it's still in the box as a spare). FWIW, I chose the Low-Resistance atomizers, and I've gotten about 6 weeks average out of each them, but believe that will improve with a better cleaning technique I'm utilizing.
4 months strong and I'm not looking back this time.
Hope that helps!