The Ergo Kiwi is the best ergonomically-sound X-ACTO blade knife that I’ve ever used. And I’ve used a lot. I’ve used every sort of blade from the most basic $6 metal original-brand knife to the rubbery silicone of the X2000 (my favorite up until now). The Ergo Kiwi is the first 3rd-party craft knife holder (base for X-ACTO knives) that …