Rasul is Vanadis 23, similar to M3 high-speed tool steel. Vanadis 23 is a harder steel, while Vanadis 4 is stronger. So yes Vanadis 4 is similar to CPM 3V / 4V.I have a bit of Vanadis 4E on a Rasul. Seems pretty indestructible, so I'll vote for that
Does stain/rust/patinate as mimozine says.
I would choose vanadis 4, if I was going to choose between those twoAny recommendations? I know the steels are similar.