Any preference? Maybe one for certain uses, and the other for other uses? Why? I bought both at Trader Joe's and am now using jojoba instead of lotion on my body and on my nails after I've removed polish. I was afraid of getting grease spots but it seems to absorb quickly enough not to be a problem. I used the argon once on my hair but I keep forgetting, esp. now that I wash my hair less frequently.