Honestly they all work fine enough. I use Mobile 1 synthetic sometimes, sometimes CLP, sometimes Ballistol, sometimes "machine gun lube," sometimes ALG GoJuice ...

See, I have chronic dry eyes, so use some rewetting tears when I wake up every morning. So I just save the bottles, label them, and top them off from a bigger bottle. I just grab whatever is sitting on my bench.

Having said that, Mobile 1 is in the 3 bags I regularly take to the range, as is Lucas Gun Oil (since I randomly bought it at AutoZone and just left it in the truck).

I've shot over 1k rounds in an AR without relubing, over 500 in a Sig 229, probably over 1k in a Glock 19. Really it doesn't matter all that much. Eventually I get around to wiping them and relubing them - when I actually do a cleaning, it's usually mobile 1 or the GoJuice.