When comparing Razer Mamba 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 Razer Mamba is ranked 31st. 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 Good design, good software
Very comfortable, good weight and easy-to-program options (button functions, colors, etc).
Pro Has wireless and wired options
The Razer Mamba is a wireless mouse that is also able to be wired by simply plugging in the provided USB cable.
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 Battery life is very limited
Battery charge dies very quickly.
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.
