Yes doterra is very good, but you have to be able careful, doterra themselves do not sell through Amazon, I purchased one doterra oil thru Amazon and when I received it the deal was broken, so it was a scam, they fill empty doterra with a cheap oil and sell it. Young living us also a very good brand, but both of those are pricey, from the research that I have done, I found the three most reputable companies with 100%pure, therapeutic grade old are Doterra, Young Living and Edens Garden. Edens Garden is the only one that is not a multi Level marketing company, therefore their oils are not as expensive.
You can make your own muscle relief cream/lotion or oil rub, for example, I have unscented Cerave lotion, which I love, and I add the muscle relief essential oil, I have another which is Cerave lotion and I added lavender and roman chamomile essential oil to help me relax and sleep. It's much more affordable if you make e it yourself and it's fun. I made a roller bottle of the muscle relief and fractionated coconut oil which I carry in my purse, and another one with lavender, peppermint and fractionated coconut oil for stress/headaches.