I think the quality of the devices and the liquids themselves are quite good. I haven't tried all the flavours (yet) and tbh I'm not actually a smoker (never have been). I have tried vaping before from a friends device (not the same brand) and found it very relaxing plus I enjoy the flavour and smell. It may be the fact that you take time to yourself and it slows down your breathing. I use only non-nicotein products of course. I'm actually looking to buy one of every flavour (fluids/caps) and an additional epen so I have always got one on charge for my afternoon toke. Compared to off-brand and some other branded ones they 'seem' safer, certainly well constructed and more 'legitimate' than off-brand products.