best reaction time is with default knife
How did u test them, the animations makes u feel that you shoot faster but if u implement an actual recording software to track ur speed from shooting point to another shooting point u will see the time is the same
But the Karambit has a quicker draw time, and the Bowie has longer range. I'd prefer them.
Imagine playing an >>>FPS<<< game where reaction time is this important
CS is garbage and not a real FPS