Just took the first few hits off of my new V2 using a cartomizer. Wow! I guess the days of the long, easy 7 second draw are gone. Getting tons of vapor with a 2 second draw and it's warmer as well but damn those cartos heat up quick. And the 11mg cartos I was using with the KR808 batts and even the pass through are now giving me a head rush that wasn't there before. This thing rocks!!! Haven't used it with the atty yet but going to get into some dripping with a t-tip this evening. The V2 itself seems very well made and I have big hands so it looks smaller than I expected but I am digging the bigger button as opposed to the tiny button on the KR808 manual batts. Very pleased so far.