I'm a chef, by trade. I started mixing my own blend of beard oils because the quality and expense were unsatisfactory from other major brands. Scent is expression and so verity is really important to me!
There are a lot of factors involved in production quality.
Argan and jojoba oils tend to be thicker and harder to pour, but are the most beneficial for beards and skin.
I incorporate essential oils into my product so I insist that you do a skin test to see if you may have an allergic reaction. My "Old Fashioned" does contain cinnamon leaf and burns initially but subsides rather quickly... but if you do a skin test and your skin turns red, do not apply to your beard! Also if you have an allergy to nuts, jojoba oil may fall under that category.