The Zwilling Kramer carbon made me a believer. One of my favorite knives to sharpen, though mine had been thinned considerably by JKI before I got it. Even so, the steel abraded so beautifully that it made me want to write a song about it. Or something. Anyway, it was lovely to sharpen and reasonably corrosion resistant and it made me want to try other knives in this steel. I haven't had the chance yet but I've always wanted to. In particular, I want to try a 230-ish gyuto from Carter Hopkins, but I don't think he's in the business anymore. And even if he is, I'm too broke.
Anyway, from what I've seen the steel tends to be pretty great all around at most heat treatments. I mean, it's nothing fancy but for a simple fine grained carbon with decent corrosion resistance, there's a lot to like about it.