Logitech - MX Master 4 vs SteelSeries - Aerox 9 Wireless

The Aerox 9 Wireless is the clear pick on raw spec strength, leading by 24.5 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 MX Master 4 if you care most about battery. The biggest gaps in its favor are battery.

Pick the Aerox 9 Wireless if you carry the device everywhere and weight or thickness has been the deciding factor before. Its strongest claims are polling rate, max dpi, weight, among others.

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

Bottom line: the Aerox 9 Wireless is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.