I am having a new knife made and am in a conundrum as to what steel to choose. I am offered a choice of three steels, 01, A2 and CPM 3V. Its intended use is bushcraft/carving and the ability to strike a spark from the spine with a fire steel would be preferable. I have plenty of experience with 01, very limited with A2 and none whatsoever with CPM 3V. For use with a fire steel the maker recommends 01, however, I also have a knife in RWL 34 and have no problem with using that with a fire steel. What steel would you go for?