It's a very well thought-out product. I got a Blu back in May of 2009; not as a product to assist quitting smoking, but more as a stand-in for smoking on some upcoming trips.
The standard Blu package comes with a charging case, two
batteries and (back then), two atomizers and five cartridges. Now they offer cartridges/cartomizers instead which are an improvement. It also comes with a USB charger, USB wall adapter and a charging cable for the charging case.
Basically, it comes with everything you need, all from one source for one price. And it just plain works right out of the box.
For my intended purpose of travel, the Blu is absolutely perfect. As long as the batteries aren't connected to the cartridge (because if you leave them connected they run down from movement, especially if you put an assembled cig in your pocket), you can slip a couple of batteries in a pocket along with a cartridge and you are prepared.
Though I am not a fan of their flavors so much, the fact is that they deliver good vapor, good throat hit and work well.
I am overall a fan of their product and think it is well thought-out.
However, I only use the Blu for my carry-on for travel. There are three reasons; two related to the Blu product itself and one related to aesthetics.
I prefer to vape menthol flavors and the menthol cartridges I have taste like coffee instead; which I can't stand. Their original (cartridge based) Magnificent Menthol really was magnificent. Whether it is an error or not I don't know, but the two packs of Magnificent Menthol cartomizers I got ... well, I just don't like. They'll do in a pinch.
Second, the battery life is horrible. The tiny 90maH batteries need to be recharged constantly. The charging case comes in handy, but I found I needed to order a third battery &c.
Third, though the Blu sizing is fantastic for being sneaky; it doesn't meet my aesthetic requirements for other times. I was never a person who smoked just to smoke; for me it was a fashion accessory. The Blu just isn't long enough and it furthermore doesn't offer enough color options to color coordinate with my wardrobe.
vaping allows me to exploit the visual cues of smoking but at reduced levels of harm.
So my overall impression of the Blu is positive. It is a well thought out and well packaged product that works simply right out of the box. It works as advertised. I have it for travel purposes for when I want to be sneaky.
However I do not like the cartridge flavors, and I do not like the short battery life. The charging case helps to correct for the deficiency in battery life, though. Furthermore though I like the slim profile, it isn't long enough for the aesthetic of my accessorizing and lacks adequate color choices. I'm sure this latter point is not important to most people though.
So I give the Blu 4 stars out of 5, because it is so well executed and works well.