What I look for in a lube is a combination of best accuracy, least fouling and easiest clean up. I know I said I look at cleaning as a labor of love, but I ain't into self-torture.
Just recently I was shooting my .54 virginia and I was lubing with spit as I usually do. My accuracy was off so I picked up a patch and found that I was cutting a hole in one corner of the patch, creating blow-by. I changed to my hunting lube of beeswax, deer tallow, and olive oil (extra virgin, but don't tell SWMBO I used her good stuff) and the patches were just fine. I'm using home cast .525 with pillow tick patching about .018 thickness. I do have some .530 balls and the next thing is to try the bigger balls with the spit and see what happens.