Cloud 9 appears to have a significant problem with quality control of their cartomizer units. Some work great; others cease doing anything after the first two inhales (if that). I'd guess the proportion (based on roughly 15 consumed) as: 1/3 fail near or at the beginning, 1/3 last about half the rated capacity (20 cigs or approximately 400 draws), and some seem to work til the end, albeit in reduced quantities near the end. So, overall, about 50% of as-billed, or making the cartomizers a bit more expensive than a normal pack of cigarettes (which always work

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