Hey Busse nuts I'm a part time maker looking at making a sword length blade.Now before they switched to INFI,and if I could get some I'd use that,I've seen the pics on the Busse site of the testing WOW what a blade.But I'm pretty sure the old Busse kensei was made from A2 has anyone out there heard of a failure,chipping or bending however extreme the use from an old Busse kensei or even a knife as I think A2 was a standard for the whole line for a while.And they must have switched for a reason.I'm not looking to find fault with Busse. It's just from what I've seen they only use the absolute best and they test thier blades harder than any production company I know.It's just feed back from other makers suggets A2 can lean a little toward the stiff and brittle in a long thin blade.