FWIW, I like my Yoshi SKD tsuchime a lot. Nice food release (probably more to do with the grind than the finish, but who knows), easy to sharpen & gets pretty sharp. Reasonably thin behind the edge but I use it as a workhorse. It's certainly not a Laser. It looks cool- probably one of my coolest looking blades.
It's difficult to pick apart which steel is in the core of some of the Yoshi knives. I think that the SKD is SKD-12, which is semi-stainless with a Cr of around 6%, while SLD (similar to SKD-11, I think) is more stain resistant with a Cr of about 12% (but still semi-stainless). The stainless cladding on mine actually has a dark patina over my pinch grip, funnily enough.
Can't comment on other options.