since i tamed the kayfun and got building it sussed out ive come to a conclusion about it. not only does it give great flavour , but i also think it's extremely efficient at delivering nicotine . take my nautilus as an example i can sit there with that on my mod and vape away like a madman . puffing on it like it gives me oxygen . pick up the kayfun have 6 or 7 puffs and i put it down for a good while . then next hit is the same few puffs and down it gos . same strength juice in both , but with the kayfun im not puffing on it half as much .