I quite smoking some time ago I have been using a e cigarette form http://knockoutvapor.com. They have a place in the local mall, they are not that good to tell the truth the one you can buy at 7 11 is better for one reason the battery life, but when you get low on drops you get a metal-y taste. With the Knock out vapor they have a low battery life, but they have more options whit there products. I am using the KOV-510 whit a low ohm drip tip. it is ok but it was like 130$ iI got it for free from a friend. the 7 11 one is only 20$. I still will say if you just want to try one go with the 7 11 one. If you are the type who only wants the best go fro the higher end ones, but be warned they can cost us to 150 dollars.