I don't know. A lot of people really like the Costar tabs, but I was typing on my friends Das Keyboard and it has Costar tabs with Browns, and I didn't like it as much. Didn't feel that solid to me for some reason. Maybe it's the plate that Ducky mounts it on, it seemed to be pretty dang solid when I disassembled my keyboard last time. And their PCB is really sick too, all red.