The first consideration is whether you will be using an optical or laser mouse. Both devices have their pros and cons, but many experienced gamers prefer to use optical devices because they are able to hit a target up to 10 feet further than laser devices. On the other hand, laser devices can scan a far greater volume of space, which can take longer to process. So for gamers who favor precision and speed, it really comes down to which type of device feels more natural and comfortable to use.
The next thing to consider is whether you are looking for programmable or wireless gaming mice. Programmable devices are usually great for those who like to have a greater degree of control over how the mouse works. Wireless devices can be more convenient if you travel with a wireless mouse or use multiple devices at once, but they generally lack the fine control that programmable device offers. You can also find optical devices that are programmable, but for the most part, programmable devices are more expensive because you have to purchase separate software programs for each of the devices you wish to control.
The third thing to consider is whether you are looking for mice that have a laser pointer or a sensor to determine the presence of an unseen object. One of the biggest drawbacks of using an msi based laser pointer is that they tend to only detect light at a distance of around 5 feet, which is far less than the maximum range a gaming mouse can have. Sensitive mouses will allow you to press the trigger and get immediate feedback, but they can sometimes be a bit finicky to use if you don't know what you are doing. If you prefer a sensor for input, then an optical one will be your best option, but if you are used to clicking rather than holding the trigger, all-purpose mice might not be right for you. It's really up to you to figure out which type of device is right for you.
Lastly, we look at the features of the mice and how they compare to the standard mouse. For many gaming mice, the main difference they have from a standard mouse is that they offer a higher dpi. For example, on some of the newer gaming mice, there are mouses that have a standard mouse's functionality with an increased dpi rating. These mouses usually work great for computer users who are used to clicking rather than holding the trigger on their standard mouse, and it is the extra sensitivity of having more button clicks per second that makes them such a popular choice among gamers. These mouses will also have additional functionality such as optical zoom, but if your main goal is for high dpi, then the higher quality mouses out there are the ones you will want to use.
One of the newest features offered by computere mice is a double-tap trigger. A double tap trigger allows you to simultaneously fire off two different buttons at the same time. This is perfect for people who enjoy playing games with multiple buttons. Some of the higher quality mouses offer a six-game buffer and up to four extra buttons, making this feature very useful. However, it can still be quite a hassle to go back and forth between all of these extra buttons.