Try “Drop-Smoke,” in BMG it’s extremely popular and it’s Kosher too. I asked people and they all seem to like it. They have a website.
Also, I have friends who used e-cigs and claim they enjoy them, but then a year later they’re smoking again (some of them). It seems the best strategy with e-cigs, are to use different levels of nicotine juice, slowly weaning yourself off. But then keep it in case of a craving