ELECOM bitra vs Kensington Orbit Trackball Mouse with Scroll Ring

Four is my rating if you purchase understanding it's designed differently, not for the normal adult male hand-size. Still, like most everything, practice makes perfect, and with familiarity comes contentment. As with my situation, with a large hand, you adjust, and can get used to it where it feels normal. It is useful if there is a very limited area where a regular mouse would not have enough room to maneuver as is in my situation

This is not a large mouse, but it is a broad one, coming in far wider than most trackball mice I've seen before. This can be a negative, if you have very limited space (like me), but it's not SO large that it's crowding anything out. Just be warned. I was also surprised how SOLID this unit felt, it's really a well built Trackball, and gives the feeling right out of the box that it could stand up to your roughest gaming sessions