I'm not familiar with ergonomic cutters other than the Martelli, which I love. I was unable to continue using the standard style cutter (had used the Olfa 45mm) because of joint deterioration, but the Martelli puts no stress whatever on the fingers; in fact, you don't even need your fingers on the cutter; they liken the dynamic to the way one would push a car (with the heel of the hand), or a rolling pin. Good luck finding the right cutter!