Before clog-free optical mice became commonplace, I used to prefer Trackball mice so much more than the clunky mechanical ball mouse design that got clogged up with lint and dirt. They took some getting used to but for a huge chunk of the 1990's they ruled most graphic design and motion graphic workstations with their precision tracking multitude of buttons and superior reliability. Seeing the new SlimBlade design from Kensington almost has me wanting to trade in my Mighty Mouse for one of these bad boys.
