Kensington Expert Mouse Wireless Trackball vs Logitech ERGO M575

the Logitech ERGO M575 is a better trackball mouse overall than the Kensington Expert Mouse Wireless Trackball. The Logitech has a more comfortable right-handed design well-suited to palm grip or claw grip. It also feels better-built and only uses one AA battery. On the other hand, the Kensington has an ambidextrous shape with a detachable wrist rest, but it has an unusual design that isn't compatible with standard grip types. It also uses AA batteries but needs two instead of one. Unfortunately, its latency is very high, though this shouldn't be noticeable for everyday tasks.