I am totally in on the Essential Oil CRAZE! I use my diffuser almost every day. I received Lavender, Lemon and Peppermint DoTerra bottles for Christmas last year and have been using them alongside my regular brand I got off Amazon. These are good quality, have a nice strong scent and work well however so do my bottles off Amazon and they were MUCH cheaper for the same quality. I do recommend this brand if you want to spend the money but just because it's expensive does not mean it is the only usable brand!