There are several reasons that you want to stay away from this brand but I am just going to say a few. The number 1 reason to stay away from this brand is when I was doing my research I came across a bulletin board about the product so I started reading about all these people that got ripped off by the company. Knight Stick was offering a 30 day free trial but the problem was you were only able to cancel your trial via telephone and nobody ever answered that phone. Then these people were being charged $150.00 for the kit that you see in the pic. That's not all they were also being charged $100.00 a month for two 5 packs of Cartomizers. I actually came across some Knight Sticks one day in a smoke shop for $20.00 so I had to buy the kit so I could try it. So when I got home I put the battery on the charger and let it charge. When it was done charging I screwed the first cartomizer in took a draw and I felt like I was going to puke. It tasted terrible so I tried the other cartomizer and it tasted as bad as the first one. Needless to say that pack got pitched all I kept was the battery because it was a common 510 battery. Knight Stick gets 1 star for the battery.