I have a 510 and while I do like it, I am constantly fiddling with this or that. Cart mods, then back to dripping, then cart mods, and battery mods. But it works.. I ordered my mom a vaporking kit for christmas and tried it when it got here. I LOVE IT and wished I would have gone that route when I started. It is a bit more expensive if you don't refill your cartos, but I loved the throat hit, taste, the quality, and the fact it just WORKED. Even tho I didn't get as much vapor at some points, it was almost a much more satisfying e-cig. :-( I need to figure out how to get one for myself now