None of the other high-end steels you'll see in big-priced knives are similar to INFI. The ones that have similar or higher corrosion resistance lack the impact resistance. The ones that have similar or higher impact resistance lack the corrosion resistance. They may have more or less wear-resistance or hardness.

Don't have my SR77 fix yet (heard a 10.5" bladed bowie may be out next, though), but I've put a wet S7 chopper back in its sheath for a weak with no visible rust. It also turned black where its edge touched staghorn sumac (a swamp tree in the USA), so it some things will corrode it.

Just remember to sharpen out any nicks in the edge should they occur, and lightly wipe your blade with mineral oil when not in use and it won't mind the constant beatings you'll give it.