Fit is the non-negotiable
Handedness, hand size, grip style, and desk posture determine whether a shape is plausible. Manufacturer dimensions are more useful than a generic ergonomic label.
Weight affects both stability and repeated movement. Neither light nor heavy is automatically better for every desk task.
Match controls to work
A fast vertical wheel helps with long documents; a thumb wheel can help with timelines or horizontal sheets. Extra buttons only add value when your operating system and software support useful assignments.
Check whether customization requires a background app and whether that app supports every computer you use.
Plan connections and charging
Bluetooth saves a port, while a dedicated receiver may simplify managed or crowded environments. Multi-device buttons should be reachable in your normal grip.
Confirm whether USB-C is charging only or also provides wired data; product pages often use the same connector language for different behavior.
Keep the decision current
Recheck specifications, compatibility, warranty terms, and any live offer immediately before purchase. We do not assume that an old price or availability statement remains true.