Very impressed so far. I got menthol and tobacco flavors from cignot. I am really surprised at how the tobacco flavor tastes like tobacco actually smells - good! I haven't let my batteries charge fully because I couldn't wait to try them. I know for sure that I'm going to need more battery life for my 510. I'm thinking about getting a Chuck, but if I get one, I think I would need an adapter to try the other model atomizers so I know what they're like. I didn't order enough blank carts and have some Nhale juice on the way that I'm really excited to try. What different materials can you use for the filling that I can try until I can get some more blank cartridges by mail? Or is it easier to clean them? Do you just use water?