I ordered a set of these off of ebay, my first e-smoking experience. They seemed to work alright at first, producing smoke equivalent to a light, and sometimes ultra-light cigarette. The smoke had sort of a cherry-ish/sweet taste, I was pretty pleased.
After using it on and off for a few hours, it stopped producing smoke entirely, with both battery packs and atomizers, fresh cartridges, and even after charging for an hour or two. It would produce maybe 1 or 2 puffs worth of smoke after letting it sit for awhile, but nothing after that.
Eventually I screwed the battery in to the charger, intent on letting it charge for a good 4 or 5 hours before trying again, but when i tried to unscrew it, the threaded housing at the end of the battery pack snapped off in the charger, breaking the e-cigarette and rendering the charger useless.
Luckily, I snagged it for $8.00 on ebay, plus $26 shipping, so I'm not out too much on this one, but the quality of the devices leaves a lot to be desired.
I'm thinking of going with a Ruyan E-Cigar or maybe even an E-Pipe instead of the E-cigarette route again..