I have several of the Kensington Expert Mouses. Everytime I use a a regular mouse, it reminds me of how much I love the Expert mouse. you never have to pick up and reposition a traditional mouse when you cant get to the edge of a page.

The Kensington Expert Mouse Trackball is like no ordinary mouse . I got this mouse as a gift. However, I did a Google search and this mouse costs $119.99. I, personally, feel that this mouse is over priced. I had expected this to be roughly 60 dollars. This mouse is nowhere near what I had expected.