The thing that actually works better than high wattage is new flavors and new toys. I make all my own juices, and getting a new set of flavorings to try out does an excellent job of making me forget to smoke. Or getting a new PV I have always wanted to try. Having a new love affair with a 3.7V KGO at present...with a LR Boge carto its just fantastic to me. Even so, I am not often 100% successful, still have a few here and there. So for now its still a smoking alternative, rather than a 100% cessation tool. I think for some smoking is really really deep seated, behaviorally, chemically, psychologically, but even if you are simply strongly cutting back, you are still better off. My attitude is if you were smoking 2-3 PAD, you were shelling out mad money for smoking, so treat yourself with a nice new PV. You would have spent the money anyways, and when I treat myself to some new vaping things, which cost much less than a months worth of smoking even 1 PAD, it really goes a long way.
I like to mix it up with various devices, flavors, wattages, etc. For me there is no one vape, there is fun vape, so be good to yourself and have fun! That works for me pretty well. Oh, and additionally, just nic might not be enough for you. Its not for many here, and swedish snus is VERY effective in getting you the rest of the tobacco alkaloids and killing cravings.