I've been thinking, and I know someone like Cliff will have an answer. I'm fairly certain that all steels do not have a linear relationship between "ease" (time it takes) of sharpening and their edge holding. What I mean is that M4 may take a half hour to sharpen from dull to shaving sharp, and hold that edge for 100 cardboard boxes (time and material are just for example here). But S90V may take 2 hours to sharpen from dull to shaving, and only be able to cut 200 boxes before dulling to the same degree. So with S90V, you are sharpening 4 times as long, but only getting twice as much performance (again, steels, materials, and times are only used for example here). So I guess what I am saying, is which steel has the best "value" in terms of ease of sharpening and edge holding? Or a better way to put it is which steel gets the best edge retention for the time it takes to sharpen it?
What is the point at which it no longer becomes worth using the latest supersteel to the average user, as the sharpening time is just not worth the edge holding to someone who has stones available to them? Is the steel with the best "value" in this regard not even a supersteel at all? Thanks