I have used Mink oil, Obenauf's and Kenetrek. I like the Kenetrek for ease of application. Obenauf's was created by a wild land firefighter for their boots, so that should tell you something about it. It is a bit harder to apply. It is real good on cracked hands, also.
As to gators, I had a pair of expensive Kenetreks, that I got for free for buying some of their expensive boots. I also have some Cabela's. I sold the Kenetreks and still have the Cabela's, I think. I could not see one bit of difference in them, personally. If I can find them, I would sell the Cabela's to you, as I don't use them anymore.