Hi StOmPeR,
I smoked Marlboro Lights for 20 years. I bought the Joye eGo and have been very happy with it. You can use 501 attys and carts with it. You won't be disappointed with the vapor output. I didn't think I'd be happy with the 501's short battery life, so I went with the eGo. The bigger size hasn't bothered me at all. I started with a 555 18mg tobacco flavor. Now I barely touch tobacco flavors unless I'm drinking. My nic level is usually 0 to 6mg. I don't miss the nicotine at all as long as I can vape.