I have been experimenting with EOs too. One thing I have noticed is the EOs I have tried from Wellington (Bergamot, Pink Grapefruit, Lime, and, Spearamint) all have an underlying smell that you don't find in FOs. It's hard to describe the scent, it's like a musky oily plant matter scent and it's not very fresh; I don't really like it. I suspect that is just the nature of EOs in soy.