It is not me that is going to be using this. My dad wants to quit smoking and is thinking about trying e-cigs. He ha tried green smoke in the past and did not like it for several reasons. First it was hard to take a drag, and second he also likes to keep his cigarettes in his mouth while he does other things. B/c of the weight of the e-cig it was too heavy to do that and it resulted in him using hi teeth and chewing it a little bit, breaking through the cartridges and that was nasty. What i'm here for is if anyone has any suggestions of an e-cig that would work for him and maybe allow him to chew the tip a little bit without breaking it? Thought about some other types like e-liquid kind of things but I think he would prefer something that had the look and feel of a real cig.