Aside from the detour about the big Mastiff, the OP should know that there is currently no regulation on the use and mixing of smoking juices in the U.S. Many threads here proclaim the 'sky is falling', but that has not happened, yet. I have tried many smoking juices from China and the US. Each has pros and cons, but that is a flavor only judgement. Tell us what you want to do and we can certainly suggest ways to empty your wallet. Welcome to vaping.!