It is hard to explain the difference, but I will try. I am pretty new to vaping, about 5 weeks and while I really enjoy vaping, sometimes it just doesn't scratch the itch that smoking did. 99% of the time Vaping occasionally throughout the day keeps me from even wanting a cigarette, but say you have something really stressful happens or you are out having cocktails with friends and you get a real craving for a cigarette and the vapor just doesn't quite fulfill what you are looking for. Well as soon as I took a few puffs of the Mothers Milk it scratched the itch so to speak. It gave me a little something that I felt like I had been missing.
That being said, I have a tank filled with it but it is not what I used all day today. At this point I plan on taking a tank to work, I work in a high stress environment and can see myself needing to step out and hit this on occasion. I will also probably keep some at home for after dinner, the only time at home for me that a vape is just not quite as satisfying as a cig used to be.
If you don't relate to that feeling then it may not be the product for you, but I know many people will understand what I am trying to say.