Hello, I have been researching e-cigs all day. It started with my wife seeing a commercial for the blu cig ( thank god we didn't get it from what i have read) we then learned about e-cig the safe cig then the other commercial ones that charge a arm and a leg for nothing. then i ran into a few forums like this one and decided to join this one. So here I am. Now from looking at reviews i have narrowed my choices to one of these 3. the 510, side sho or 902 unless someone can tell me a reason for a different one please let me know a good reason to go with a different one if not what one of these would be the better one, thanks for your help. and what is a good vender to go threw i see nothing but great stuff about MV thanks again.