When comparing Kensington Expert Mouse vs Evoluent VerticalMouse 4, the Slant community recommends Evoluent VerticalMouse 4 for most people. In the question“What is the best mouse for programmers?” Evoluent VerticalMouse 4 is ranked 8th while Kensington Expert Mouse is ranked 21st. The most important reason people chose Evoluent VerticalMouse 4 is:
The included Mouse Manager software allows you to assign different functions to the buttons such as hotkeys, Windows commands, or media control. You can reduce the amount of clicking you have to do by assigning a double-click button, or set the mouse to double-click automatically after a short pause. Static strain can also be reduced by pressing and holding a button momentarily to simulate continuous pressing.
Specs
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Pros
Pro Comfortable and ergonomic
With thumb and pinky on the buttons and three fingers controlling the ball, the user's wrist lays flat on the table (or on the provided attachable wrist rest).
Pro Intuitive link between ball motion and FPS camera angle
The ball is large enough for turning it to feel like physically rotating an object.
Pro Included software further eases work
The included Mouse Manager software allows you to assign different functions to the buttons such as hotkeys, Windows commands, or media control. You can reduce the amount of clicking you have to do by assigning a double-click button, or set the mouse to double-click automatically after a short pause. Static strain can also be reduced by pressing and holding a button momentarily to simulate continuous pressing.
Pro Made from quality plastic and rubber
The mouse is made of quality hard plastic. The back portion of the mouse is made of a soft rubberized material that helps add grip. The scroll wheel feels tight and responsive.
Pro Comes in left and right handed forms
This mouse can be bought in six different versions: a left-handed one, two smaller ones (wired and wireless), and three standard right-handed versions.
Pro Takes away stress from your arms
Even if you don't have wrist pain, this mouse will be better for your hand health.
Pro Super comfortable and easy to use
Rather than twisting your forearm to abide the requirements of a traditional mouse, the VerticalMouse lets your arm rest in a natural pose while you navigate. Add to that browser buttons and customizable software on top of a navigating experience that is not only better for you but one of the smoothest in the consumer category and you have a easy to use everyday mouse.
Pro Lightweight
So you don't have to exert as much energy to move the mouse.
Cons
Con Not a mouse
This is a trackball, not a mouse.
Con Questionable secondary button defaults
The upper left button, which is the hardest to use, is middle click by default. The upper right, which the ring finger naturally rests near, defaults to Back. This can be particularly annoying as the Back button is easy to brush when moving hands between keyboard and mouse.
Con Takes a while to adapt
For a user that spends 8+ hours with a mouse it may take days, for a casual user it may take weeks.
Con Buttons feel cheap
The buttons feel cheap and mushy to press compared to other mice in its price range.
Con Subpar tracking
A bit inaccurate and may stutter on certain surfaces (mousepad recommended).
Con Driver interferes with other mice
The VerticalMouse mouse driver interferes with the Magic Mouse and Kensington drivers and even disables the Magic Mouse upon startup.