Wow! That's awesome, and quite a coup. It's not easy to get M390 and few companies use it. IMOHO it's one of the best knife steels on the planet! I need another folder like a nuclear sub needs a screen door but I might have to get on anyway.

I have a couple of kitchen knives in M390 and I've found edge retention is maybe four times better than Super Aogami! There's really nothing I've used that can best it significantly, certainly nothing affordable. It takes a very keen edge as well.