For most users, the standard three-button mouse (where the scroll wheel functions as a third button) will do the job just fine. But for specific tasks, look into specially designed mice.

Gaming Mice

Gamers should always invest in a dedicated gaming mouse. It won't make you a better player, but it will make your gameplay a whole lot easier.The best gaming mouse will offer ergonomic benefits, making it more comfortable for lengthy sessions of play. It'll have a higher-quality sensor, which improves its accuracy.And best of all, it will have buttons that you can configure to make repetitive tasks easier. Need to pull up your sniper rifle, or use a medkit? A simple click can do it. You can even assign complex macros to a single button.

Travel Mice

The other main type of specialist mouse is the travel mouse. Most are just standard two or three-button units shrunk for compactness. Most are wireless, though some use short or retractable cables. They're also usually affordable enough that you can easily replace them if you lose one.The main point of a travel mouse is the ability to fit inside a tight space---such as a laptop bag or a purse---and they often aren't designed with ergonomics in mind. They're great if you're on the road a lot, but they aren't suited for heavy use.

Ergonomic Mice Are Better for Heavy Use

Ergonomic mice are designed to fit in your hand in a more natural way, reducing strain on your fingers and wrist. They also tend to have extra buttons within easy reach of your digits.How comfortable they are depends on many conditions, including the kind of grip you prefer. Some users like to hold their hand flatly, while others prefer a more claw-like grip.