At those prices, those blades are Art.
As such, trying to put them through the rational decision making process you'd use for a Del Tin or Paul Chen is pointless.
Lamborghini Diablos get crappy gas mileage, need frequent service, have lousy sound insulation, and interior trim bits fall off constantly. None of that matters one whit, however, to the man who wants (and can afford) a Diablo.
If you can afford to go do live-steel sparring or tatami cutting with a $2,000-$12,000 sword, I have no business giving you advice on which blade to buy.
(Coming Next Week: Kim Breed torture-tests $4,000 Barry Gallagher custom gent's folder! Does mother-of-pearl and blued pattern damascus hold up to hacking through I-beams and digging trenches? Will the liner lock support a Toyota Tundra? Find out!
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