Just buy save edge files (either through baileys or direct from saveedge) and forget about everything else. They are way better than the others.
Most of the other files you will buy are the same. Timber savage, frost bite, stihl, oregon, husqvarna, woodland pro, vallorbe, etc, etc, are all the same brand.
Pferd files were almost as bad as the chinese ones as far as durability goes when I tried them.
You can oil, tap, clean, brush, chalk, etc etc etc files to make them last longer.
But honestly, just buy the save edge. They dont even cost more than other files.
I've had people tell me to completely tap out the file after each stroke, or to take a rag and really clean it after each stroke. #### that, i dont have time for that ####.