[sorry I didn't read all the thread

]
Yes, an e-cigarette will help you stop cigarettes better than anything else, we have enough proof of this. Works even better than Snus, and a whole lot better than pharmaceuticals of course.
The Allen Carr organisation apparently has a success rate of 53% for their quit programme, but I don't know any details. E-cigs work for a minimum of 31% and that is when unmentored. We think that with good mentoring, 75% or even 80% success is possible.
Some people need more than just the nicotine, though, and they are helped by using Snus as well. I think this will be of value, especially at first, to those who still experience strong cravings - since they obviously need more than nicotine.
In some cases people switch to an e-cig without really meaning too. That's what happened to me, I never wanted to quit or intended to quit, mainly because I enjoy smoking and only smoke (or smoked, that is) a few a day. Then one day I realised I hadn't smoked in a long while
It might be important to some, though, depending on their local political situation mainly, to point out that e-cigarette use can be regarded as switching to an alternative reduced-harm product, not quitting. There is a lot of argument about this since we all feel differently about it - but many of us regard e-cig use as 'switching' not 'quitting'.