I hate to say it, but I got a Blu too. There's nothing toooo to wrong with it. Except the batts give out to quickly and I'm going through carts like crazy and they vape well for the first 5 to 10 hits then it slopes down to very little and now, the report that the Blupack might blow up on ya! It's okay.
I don't believe there to much wrong as Blu being a starter kit to people that are considering vaping over smoking. Try it and if vaping is for you then, move up to more reliable gear. If it isn't pass it on to someone else.
Since I going through carts like crazy, I'm not getting satisfied and had to reach for an analog or two. (however, I've had the same pack for a week now and I used to smoke a pack a day!) Therefore, with the help and suggestions of this forum, I've ordered my 510 about three days ago and i can't get here any quicker. I believe I need something that's going to hit better so I can get off these damn smokes for good