A quick clarification if you don't mind. Gesshin Uraku and Yoshihiro are different brands, correct?
Same, but the Gesshin meets JKI standards.
The difference between try and triumph is a little "umph"! NO EXCUSES!!!!!!!
If you have any specific questions I would be happy to attempt to answer them. They are a great starter knife but I feel will truly perform best if the get thorough work out on the stones to touch up their profiles.