Hard to sharpen most often means hard to lose an edge too.
My S30V blades will hold edge longer than my ATS34 blades. But in general use, either is outstanding. The S30V has become my choice for saltwater.
The Japanese mastered ATS34, especially in the Al Mar designs. Dozier/Crotts and Phil Wilson do magic with S30V.
Lots to be said for letting a knifemaker build what they like to work with.
