After a lot of deliberation I ended up buying the Masakage Yuki Gyuto. Turns out, my wife also bought the Goko for a Christmas present, so now I have both. Figured I'd give some thoughts....
The Masakage is a really pretty knife, and the finish is great. The ferrule and handle are sanded so there is virtually no noticeable joint. Handle is natural and untreated, giving it a nice clean look. The blade is really pretty too.
The Goko is a nice looking blade, pictures don't do it justice. My only complaint is that the ferrule is shiny/plasticy, and the fit with the handle isn't nearly as good as the Masakage. The handle is a bit darker with a semi-gloss that I like a lot.
OOTB sharpness goes hands down to the Goko. Ridiculously sharp. Shaves hair off my arm with ease. The Masakage is sharp, but I suspect it can get much better with a bit of time on the stones. Being a beginner I'm doing some practice before I attempt any sharpening.
All in all very happy with both. I'd love to see Goko change the ferrule...even now its a fantastic knife and I can't stress how sharp it is...incredible.Glad I didn't have to choose just one!