Learned here about the 510. Got it and loved it. But now my hubby has moved up to the eGo-T type b and his attys and tanks were just sitting there. So now I am using eGo-T type a. And love it! I did have to order me a new one in pink! LOL!! If it ain't gonna look like a analog then I want pink!! I do the fruit flavors and he does the tobacco ones. So no sharing of liquids! But best of all I have been analog free since April the first!!!