First off, I'd like to have more control of what I'm putting into my body which is why I'm looking into DIY. So, getting a grip on the process and components I happened onto a flavor warehouse online. Some of the flavorings have a "caution" background and when looking at the item, it states a percentage of ingredient that could be hazardous. So....I'm sure these are the flavors that taste freakin awesome and all that but if I have a *choice*, why choose them? But, I'm a noob and would love to hear what some of you vets have to say about this that have researched this far more than I have. I'm also noticing a V2 of these items by companies making an effort to cut out the nasties. Conversely, I noticed on another very popular flavor warehouse, these items are not as clearly flagged....Uhm.....Not as kosh?