Hi,
So I'm looking to get my parents these things for christmas as they have expressed an interest in quitting but seem to lack the self control or discipline to do so

. (I'm not a smoker as you have probably guessed by that last sentence)
I'll give you some info on habits and brand they smoke in the hopes that it will help with any advice on what to get them. They both typically smoke 20ish a day (at least that's what they say, may be more idk) and their brand is silk cut ultra.
My mom has given up before for 6 months but started again and I think she does it more out of habit (+ addiction I guess) than anything.
My dad, on the other hand, seems to enjoy smoking and he has developed a nasty smokers cough over the 20+ years. He was the one who mentioned these things to me so I guess he would like to quit too.
Basically, I'm looking for the best option on what to get them. Also, are these things actually likely to work? By that I mean will they quit smoking and move to just vaping? The last thing I want to happen is for them to continue smoking and then start using the e-cigarette thing whenever smoking is inconvenient / not allowed.
I've read a few of the threads but all this talk of voltages and flavors is beyond me as I have no experience with any of this stuff.
Thanks in advance.