I'm very particular when it comes to my office needs. If I find something I like, I stick with it rather than buying the newest and latest gadgets out there. One of my favorite items is my trackman trackball mouse. I am on the computer for 8 hours a day and absolutely love the trackball to take me from screen to screen, program after program. The sleek fit in my right hand and only the movement of my thumb to move the ball and clicking the buttons with my forefinger saves me so much time versus using a mouse that has to be moved all over a mousepad or desk space. It stays in one place all day!! I've had this trackball for almost 10 years, yes, the same one!! Once every couple of years I remove the back and clean out what little dust that has accumulated around the ball. I also purchased this model for my computer at home and have had it for about the same length of time, can't beat that for reliability. It was expensive back when I bought it but worth every penny!!