I went the e-cig route. It took a while to find what worked for me, but it is amazingly cheap and I haven't touched a cigarette in 9 months nor had the desire to.
A couple problems I had at first:
Batteries that didn't last long enough
Cartridges that didn't last long and were very inconsistent
Not nearly enough vapor
I ended up going with an Ego-T passthru battery. It has the bonus of being able to smoke it while its charging, and just unplug the USB cable when you want to go. It lasts me all day (both the 650mah and the 900mah versions).
With it I use Ego Mega dual coil cartomizers. They are $2.80 each. These things are amazing, completely consistent, hold a ton of fluid - easily lasts me all day. They are easily refilled - I replace them about once a week. It's important to refill them before they are empty, or you will burn the wick and it will taste like crap.
I use USA Mix china fluid, its about $10 for 50ml - lasts me about a month.
$20 one-time for a battery, $20/month for supplies - never feel the need to touch a cigarette.. no ash, no butts, no smell - its absolutely amazing. And definitely beats the $150 or so a month i was spending on cigarettes. Tried the gum/patch/cold turkey etc all before.