my personal review:-

e-cigarette.
pros:-
1. odourless
2. variety of different taste. (peach,cigar,lemon, orange etc)
3. can smoke anywhere (rules doesnt apply cos it aint tobacco)
4. Save money *this only apply if you smoke normally
5. doesnt dry the throat/lung

cons:-
1. battery need charge once a day (* i'm using stock battery chappalang)
2. easy to go overdose on nicotine ( doesnt dry the throat, and your lung wont feel full, so u keep puffing away, its like inhale air)
3. technology still not refined (mine is rm350 but sometimes it doesnt vaporize the liquid, instead all the liquid sucked out to my mouth)
2.