Of the three, I prefer avocado oil due to its high palmitic value, and it feels good on the skin. I don't use any nut oils for the same reason as
@Kari Howie.
My recipe does not have any palm oil or animal fat so i rely on picking up a bit of extra palmitic where I can.
My recipe uses 20% Olive Oil and 5% Avocado oil. Have you looked up Rice Bran Oil? It is very cheap here in New Zealand and I use that at 20% also. It is 1/4 of the price of OO now that OO has gone up in price.
Edit to Add: If fact, I think I'll change my OO down to 10% and up the RBO to 30%. That will offset the OO price increase.