I read this thread because, like many others who care about their guns, you want to be using the best. Here is my formula, to date, too many years to remember, I have used Remoil on all internal moving parts, and Hoppe gun oil on the slide.
Both are relatively inexpensive, available everywhere, cleanup is easy, and they have never failed me in any of my guns, and I've had a lot in the past 50+ years of gun ownership.
I will not slam any manufacturer or fellow gun user, for what they use. I have tried a lot of different stuff over the years, none has ever actually failed me. (I don't use AR's) most recently I am getting curious about Marvel Mystery Oil.
The only frogs we have here in southern Ohio is the four legged kind, so I haven't been able to try Froglube. Oh, and I hate mail order, I like to hold in my hand what I am buying.
Good job to all who have contributed to this thread, the best lessons are learned from our fellow gun owners.