That stainless Yasuke is fantastic. The handle is a bit wider than a Kono HD. More standard WA octo where the HD is more "custom" handle. Both knives are finished superbly. Both the spines and choils are beautifully rounded, with my nod going slightly to the HD but I think I feel that way more because of the steel.
My 270 HD is is the thinnest and lightest knife of that size I have ever used or seen in person. It's just a pure lazer beam. And as Chris points out the Yasuke is more so. Mine is 240 so of course the size difference is going to cause a difference ... but that Yasuke is super thin none the less. I almost want a 270 just to see if they can keep that profile, weight ratio and thinness in a larger blade. I hadn't used mine in a pro setting in quite a while til the other day. I forgot how much I really like this knife. It's really a pure performer.
A think there's been a sentiment it won't hold up in a pro setting. It is more flexible and the steel is listed and feels around 58. So will it hold that pure edge as long as some others, no, but it has some give and won't chip or ding easily and it's sooooo freaking thin even with a mere "decent" edge it flies through things with ease because of it's thinness and excellent profile (one of my favorites I have used). I think it's still a great value knife even with the price increase ( I got mine for $145 engraved, a freaking steal). At home this thing will last forever. In a pro setting if you advance technique and understand it's strengths and limits it will do the same. It's NOT an everything knife. It is however and excellent performer (and super light and easy on the hands) when it comes to certain tasks.
Yes, I had some green stain sitting around, so I thought I'd brighten things up; worked pretty well. I gave that knife away some time ago, though. The CCK is one of my favorite gifts, as I've given a half dozen of them away...
All around workhorses are the KS and the HD. I've been leaning on the Tanaka R2 lots lately, as it takes a sweet edge and has really superior retention. Plus it's comfy and looks nice.