When comparing Steelseries Sensei vs Logitech M570, the Slant community recommends Logitech M570 for most people. In the question“What is the best mouse for programmers?” Logitech M570 is ranked 11th while Steelseries Sensei is ranked 14th. The most important reason people chose Logitech M570 is:
Using a stationary mouse will keep wrist and arm movement down. The trackball being operated by the thumb makes for great comfort (do not recommend finger based track balls). A trackball doesn't require a large flat surface, though next to the keyboard still tends to be most comfortable.
Specs
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Pros
Pro Customizable
There are many settings including acceleration, polling rate, and others that can be changed from software or the built-in LCD. You can customize the 7 buttons to do whatever you like.
Pro CPI switching
You can change between 2 different DPI settings via a convenient button located below the scroll wheel.
Pro Ambidextrous
Both right-handed and left-handed people can use the mouse.
Pro Trackball
Using a stationary mouse will keep wrist and arm movement down. The trackball being operated by the thumb makes for great comfort (do not recommend finger based track balls).
A trackball doesn't require a large flat surface, though next to the keyboard still tends to be most comfortable.
Pro Wireless
With 18 months of wireless power, it can be used in a variety of manners not handicapped by a wire.
Cons
Con Bad driver software
The driver software is buggy and crashes often.
Con Somewhat poor grip
The material the mouse is made up of can be slick especially when using with sweaty hands, something that often happens with prolonged use.
Con Low build quality
The shell is very cheap, thin plastic and the button sensors are either far too easy to trigger (left/right click) or ridiculously hard (back/forward, middle button/wheel).
Con Really awkward with the left hand.
Doesn't really go both ways