As an ex-competitive FPS player here's my 2c about gaming mice:
THESE DAYS most mice are absolutely full of ****, this wasn't the case 10 years or so ago. There have been a couple of improvements over time, such as native 500Hz / 1000Hz
Most of the best mice sensors ever made are not produced any more, some of the newer ones are "okay".
There are really only three (technically five) important things to consider when choosing a mouse:
1. Comfort - you'll want to use a mouse that you find comfortable to grip, different people prefer different shapes and grips, I find generally it's best to stick to the same shape you're used to
IF YOU DONT PLAY ONLINE FPS, THEN THE BELOW THINGS PROBABLY DONT MATTER THAT MUCH
2. Sensor - you don't want your mouse to malfunction, so it's important to buy a mouse that works on the gaming surface that you use and has a high enough max control speed for the sensitivity that you use
3. Issues - no mouse is perfect, every mouse has at least something wrong with it, whether it be a ****ty mouse wheel, a click bug, issues at certain dpi or mouse prediction
(4.) Support - If you use Windows 8, you can't overclock your USB ports to get better performance out of old mice, such as the Microsoft Intellimouse 3.0 or the Logitech MX500, so it might be better to use a native 500Hz / 1000Hz mouse.
(5.) DPI - If you have a very large resolution (1440p+) and use a very high sensitivity (aka you move your mouse less than 10cm to do a 360 turn) then DPI could be considered somewhat important, but for the largest screen today 1600 dpi will be more than enough. I personally use 400Hz, as I think it has the best "feel" and I use a low sensitivity.
The best mice I've ever used are:
Logitech MX500 (original, not the rebadge) - This mouse uses the arguably the best sensor ever made, perfect control up to a whopping 4.5 metres a second when overclocked to 500Hz+ meaning that you can use really low sensitivities with perfect accuracy. Downside: Prediction, Native 125Hz, needs to be overclocked.
Logitech MX300 - Same as above, uses the same sensor, but comes in a different shape and without the side buttons
Microsoft Wheel Mouse Optical/Intellimouse 1.1a - This mouse uses a sensor which is also arguably the best sensor ever made, although it is not meant for massively low sensitivity, as the perfect control speed is only ~ 1.8m/sec when overclocked to 500Hz+, this mouse sensor has absolutely no prediction whatsoever and there is no mouse sensor that feels as "true" as this one. Downsides: 125Hz native, mwheelup often fires on it's own randomly - can be fixed with a mod, Max Control 1.8m/sec - ultra low sens will malfunction/have negative accel
Microsoft Intellimouse Explorer 3.0 - Same as above, just comes in a different shape
A4Tech X7 X-710BF - Good perfect control speed when overclocked, has a 3 x left click button Downsides: 125Hz native, Prediction?, impossible to find?
Good mice that are not quite as good as above:
Logitech G400 - Basically nowadays version of the Logitech MX5xx series, Native and stable 1000Hz (amazing), Great perfect control speed, buttons have low click latency Downsides: 800Hz native (this is a negative for me because I use 400Hz only), not perfect at all DPI levels, kinda ****ty mouse wheel
Razer Deathadder (v1, 1800 dpi) - I don't like this mouse, but that's because I don't like the shape and I don't like the materials used. However the Deathadder (in all it's versions) is probably the most popular mouse today. It is native 500Hz, can store profiles, low latency buttons and good perfect control Downsides: Not great at all DPIs, **** build quality, **** mouse wheel, known to brick (as poster above mentioned), **** cable
Logitech MX518 (1600 dpi version) - The not quite as good MX500. Not made anymore, will probably never find one anywhere as they were replaced with an 1800 dpi version with a different version of the sensor late in the production line. A human can not move this mouse fast enough to even get close to it's unknown malfunction speed. Great mouse wheel Downsides: can only do stable 250Hz, 500Hz clips to 250Hz every now and again, 125Hz native, Prediction.
I do not have any knowledge of new mice. There are so many of them now and my current mice (G400, Microsoft v3 on my spare PC and WMO 1.1a backup) will probably last me until I die. I would however like to collect a good condition MX500, 300 and A4Tech mouse if I could ever find another one.
Edited by Sensuki, 23 September 2014 - 05:00 AM.