I'm thinking of getting some fragrance kits from Perfumers' World one of these days. I had some questions about them, so i sent them an e-mail, and their president Steven Dowthwaite was gracious enough to reply personally. I was hesitant to do business with them because they are so far away, but their methods and courses sound really good. They seem like a very reputable place. I'll probably order a kit from them in the next few months.