Hi! I am going to set up a mobile beauty business soon. I have a question about nail polishes. Which one would you recommend, Ideally 5 free as I like organic product however I am worried that they might not last as long as the other brands. Also do you stick to one brand or is it Ok to mix nail polishes brand? I've heard about a new brand called Soigne Botanique, any feedback on it, or shall I stick to the usual OPI, or maybe Mavala? Thank you!