Boox - Note Air 4 C vs Kobo - Libra 2

The Note Air 4 C is the clear pick on raw spec strength, leading by 18.4 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.

Pick the Note Air 4 C if the display is what you stare at all day — refresh rate, brightness, or sharpness is where the difference will be most visible. The biggest gaps in its favor are storage, screen size, color screen.

Pick the Libra 2 if you carry the device everywhere and weight or thickness has been the deciding factor before. Its strongest claims are weight, waterproof.

Both ship with comparable resolution, so those specs don't separate the two — focus on the differences below.

Bottom line: the Note Air 4 C is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.