E-cigarette is illegal in Singapore but I still like to switch e-cigarettes for the sake of my family. As it is illegal in Singapore, I need to purchase e-cigarette from overseas (on line) or from our neighbouring country Malaysia. It will be a hassle to sneak in supplies so before I make my trip to purchase, I want to hear your advise and recommendation 1. on what flavours I should get. 2. Ever mixing different flavours? 3. Any Expiry date on the e-liquid?