The key thing here is to know what you're getting, and to make sure you have the appropriate port free (or that you have Bluetooth support). If you opt for a cabled mouse, don't forget to check the cable length. Is it long enough to reach from a PC tower on the floor to your desk? Is it six feet long, but only needs to run from your mouse pad to the laptop beside it? Also look at the cable itself. A braided nylon or cloth cover is more durable than a standard rubber coating.
At this point, the major mouse makers' software packages have been through generations of refinement, so they are slick. Logitech Gaming System (LGS), Corsair Utility Engine (CUE), and Razer Synapse are three of the best-regarded mouse- and keyboard-control utilities that cater to gamers. All offer advanced tweakability, with CUE regarded by many users and reviewers as the deepest, but also the trickiest to master in-depth.