Drummer, Riva 510 is an eGo clone, so they're about the same. You'd only need to get blue foam if you wanted to try out the carts, don't need to get it for cartos. You're welcome to try different setups.
As for juice, it's more company specific than country. I don't know if some US juice makers mix them in a garage or "god knows where". Johnson Creek and Dekang, which is Chinese and the biggest juice maker, have video of their clean manufacturing facilities on YouTube. I'm sure there are other quality juice makers that others can offer you.
As for juice, it's more company specific than country. I don't know if some US juice makers mix them in a garage or "god knows where". Johnson Creek and Dekang, which is Chinese and the biggest juice maker, have video of their clean manufacturing facilities on YouTube. I'm sure there are other quality juice makers that others can offer you.