Great ideas! Thank you all! I am just starting, so I will keep it simple for now on my pv, one model, etc. But when I am ready, I will look for cartomizers for my current model, or just try a new one. I was kind of scared of the 2 piece systems, figured I would flood it, or break it in some way. I can be quite hard on my stuff! My second (same) pv is on it's way, so I will be able to rotate, and hopefully, by that point, I can tame down my free will freedom of vaping so as not to overheat it! Used it at the bar tonight (with the owner's permission), and just felt so free and happy! You should have seen the looks I got, some of envy from the smokers filing by to go outside, and some of curiosity from the non-smokers. Just pure heaven!!