My top 3 would be
1. CPM 3V
It's super versatile, and nearly indestructible. And I can get awesome cutting geometry with it for choppers. And has pretty good edge holding
2. CPM- cruwear. (Also Z-Wear)
I really love the edge holding and toughness. Relatively easy to sharpen to a very high degree. Edge holding is exellent at 62HRC for Zwear. May push for 63 soon. Whatever spyderco did on the para3's for the CPM Cru-wear is quite good.
3. Zfinit/Lc200n
An exellent nitrogen stainless steel with very good toughness and edge holding. And it's super stain resistant, seems better than H1. And gets screaming sharp with very little effort. I've made a bowie knife in it and at 60HRC it was super tough!
(I would say vanax, but if never actually used any knives in it, but have made some!)