When comparing Mad Catz RAT 7 vs Logitech G700S, the Slant community recommends Logitech G700S for most people. In the question“What is the best gaming mouse?” Logitech G700S is ranked 21st while Mad Catz RAT 7 is ranked 37th. The most important reason people chose Logitech G700S is:
The G700s can switch between wireless mode and wired mode.
Specs
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Pros
Pro Reliable; keeps on going through the years
It will still work just as well as the day you bought it.
Pro Incredible flexibility
Many parts of the mouse are adjustable with interchangeable pinkie grips and palm rests to a custom weight system. The mouse is able to literally change its size and weight.
Pro Cordless version available
It also comes in a cordless version, called the RAT 9.
Pro Wired or Wireless
The G700s can switch between wireless mode and wired mode.
Pro Many buttons
The G700s has 13 fully re-programmable buttons.
Pro Comfortable for palm or claw grip
The Logitech G700S is a very comfortable mouse that works great with palm and claw grip use.

Pro Dual Scroll Modes
Cons
Con Laser (not optical) sensor
Laser sensors are just not that great when compared to optical sensors. Often there is acceleration issues with laser sensors.
Con Expensive for what the internal hardware is
Sadly the components inside of this mouse are pretty cheap, ranging from the switches to the laser sensor. For the price Mad Catz is charging one should expect higher quality components.
Con Forward / back buttons wear easily
The two buttons located on the side of the mouse (sometimes known as the page forward and page back buttons for internet browsers) wear out easily after only a few months of usage. That means that it requires extra force to register a button press, all while receiving no touch (or audible clicking) feedback. Frustrating but the mouse does continue working.

Con Uncomfortable "seam" where your thumb and palm meet
Con Battery life
The battery lasts about a day, depending on what sensor settings you use. This is somewhat mitigated by the ability to just plug in the cable and keep going, though.
Con Large base
The G700s's bottom is exceptionally large, and dirt/grime often gets stuck on the bottom and causes tracking issues.
