I switch from using the 510 and the RN4081 attys---great with dripping!!!. Truthfully, when it comes to attys, I prefer the latter, but love the convenience of the 510 clearos.
I use NicoStick type mods but just won a 510 kit so I now own my first new factory batteries and plan on keeping them to use for special occasions.
Cherry (when I can come up with some that taste decent), bubblegum, spearmint, cinnamon. The list is a bit long actually so lets just say I have a sweet tooth!!!