I agree with you
@jedy617 and I'm guessing most here will too on this point. The simple carbon steels whether Hitachi white, 108x, 1095 and other similar steels are never going to compare to their more alloyed brethren in terms of edge retention. All things being relative, I think there are definite standouts out there such as Munetoshi's white #2 and Tansu's 1095 as Blokey noted above, which also both tend towards more robust profiles in my experience. Do Tanaka's white steel blades come in both more robust profiles like the wide bevels and the much thinner profiles that I've seen in the aogami offerings? Regardless, Vanadis 8 or s90v and things like that are still just going to laugh at them all in edge retention.
Part of what I appreciate is being able to go back and forth between stuff that just sharpens up smooth as hell on the stones which can be an enjoyable experience versus other times like when traveling where I want a PM steel that I know I will not need to sharpen for quite sometime.
Personally, I'm just a home cook, so even well heat treated simple carbons can hold plenty well for my purposes versus a professional who will do as much cutting in a service as I do in weeks of preparing meals for my family. I have friends and family in the industry who definitely differ in view. One likes the ease of being able to give a quick touch up on carbon and bring back a nice edge, another just wants the best edge retention possible, a third doesn't give a **** and will cut with anything. To each their own I guess.
Cheers to all of em!