H911KILLA

I am currently attempting to kick a 1 pack a day 5 year binge of cigarettes. I work for the Canadian National Railway, so i'm looking for something that will last me majority of the day and have a good taste. I am considering the eGo starter kit from the vapor store, but I just don't know what kind of piece will fit my daily lifestyle. I need something with a good amount of vapor/throat hit, but will last me majority of the day. So i'm not sure if I need a 510 piece or a 2 piece system. Looking to buy soon so all opinions/thoughts help a ton!