Ive been off cigs for a couple months now.....love that, I started with an overpriced Prosmoke unit....and for a mini cig it is fine, but i didnt like how the carts dried up......sure you can drip liquid in them ....anyways I saw enough videos an read enough reviews on the Ego-t model.....yes a bigger device, and you fill liquid in the tank, but wow, this unit has been working great for at least 5 weeks now.....i even ordered a purple coloured one for my girlfriend who smokes occasionally........I like that the tank holds enough juice for the day, and i have no issues with the battery life....usually dont need a charge until 4-5 days...(i smoked maybe a pack every two days)..Im here in Edmonton.....No im not making money from sites or distributors....Im just saying this unit works well....for me