If you like gaming mice with lots of programmable buttons, Corsair's heavyweight Scimitar Pro RGB MMO is available on Amazon for $50. Weighing 147g, it is heavier than a typical gaming mouse and is better suited for MMOs than FPSs.

The 12 mechanical side buttons are useful for mapping the skills of Final Fantasy 14's Red Mage or vanilla World of Warcraft's Undead Rogue; while not as versatile as the Razer Naga Trinity's interchangeable side button array but the Scimitar's ergonomic design allows the mouse's side buttons to slide back and forth by up to 8 mm to ensure comfortable reach regardless of hand size.

The Scimitar also allows for onboard storage of up to three profiles, so you can store macros on the mouse itself and not worry about losing your favorite skill rotations. If you are not using an MMO gaming mouse on a regular basis, the side buttons will take some getting used to. Once you get used to them, however, they will be a godsend for those who like to use hotkey commands in editing and other productivity software outside of gaming.