The BladeForums.com 2024 Traditional Knife is available! Price is $250 ea (shipped within CONUS).
Order here: https://www.bladeforums.com/help/2024-traditional/
As others have said; depends on your use.
D2 and A2 rocks IMO.
D2 'take a lousy edge but holds it forever' used to be a saying.
Ive seen D2 zip through deer after deer after other knifde steels have needed re-sharpening.
There are loads of interesting modern steels but D2 is still more than fine in my book.