The newer model atomizer and cartomizers are even better than last year. The atomizer have steadily improved over past couple years. Better quality, better quality control and much more durable than before. Current models lasts about 2 weeks to 2 months depending on use but can easily last 30 or more days under normal use. Make sure not to burn out the atomizer by dry vaporizing. Make sure that the atomizer/cartomizer had time to replenish with e liquid especially after multiple drags.