My DH smokes around 10 a day, prob more when he goes out. I worry all the time about him getting cancer. He has agreed to try vaping so I'm on the case! Thanks to the really helpful and informative threads on here, I'm going to get him 2 x Express kit from ParadiseVapeUk and some starter flavours from Lickwid. But what nicotine strength should I get - 6, 12, 18 or 24mg? Can't find info re strength in the online shops. Any other tips would also be gratefully received. Thanks!