Persoanlly, I use Thieves oil and cleaner almost daily.
I also rely on oil of oregano during cold and flu season. I fill a clear capsule with it and Thieves oil and take it orally. Kicks it and I never get that, "I've been hit by a bus" feeling.
I make our own "Vicks" using coconut oil, eucalyptus, peppermint, and RC oil. I rub it on my sons chest and feet so he breathes better. I diffuse these oils too! Love my diffusers!
These are my favorites. If you'd like to look at products, please visit my site and ask questions as needed. I love these oils and products and I'm positive others will too!