Cowry X is a high speed powdered tool steel, but it's not the same as the Ruysen or Tojiro...
From what I have been told, Ruysen makes them both and they are more or less the same knife. I have not held a Blazen, so I can neither confirm nor deny. I had a Tojiro PS gyuto, my fit and finish was fine, but the handle shape bothers some people, I thought it was fine...
Also note the Blazen includes a nice saya... What that is worth to you I'm not sure.
| chad g|
I'm gonna raise your roof
Ring your bell and that's the truth
Speed don't kill, and I'm the proof
Just call me snaggletooth