it's really all in what e-juice you get. the blu and others like it all pretty much suck! and i also found that just the tabacco only flavors just didn't cut it. went threw a few til i got a tabacco and vanilla flavor that brought it all together, and there other mixes out there like it. got a brandy cigar couple weeks ago that i love!
but it's more then just what flavor you chose, is having a real good vapor cloud, blowing "vape" rings like a real smoke. having a smaller battery and tank so you can hold it easily in your hand like you do with a regular smoke. its all those habit things you got use too smoking, and if you bring some of those habits to the e-cig it makes the switch over a bit easier.
like some of us said the e-go twist type battery and a smok tec tank is a good start, and of course make sure your know where the e-juice comes from, like made in the usa!
i stopped smoking over a year now, it was a bit tuff 1st month or so, but love it now and i feel tons better for it!!!