a quick review:

If you’re looking for a mouse for graphic design then your best choice is the Logitech Trackman Marble Mouse. It offers a contoured shape and ambidextrous design for improved comfort for either hand during long periods of use. And it’s also the smoothest, fastest and most accurate mouse for graphic design out there. Here are some of it’shighlights below:

• Smooth fingertip control – just a slight touch on the trackball lets you control the cursor with superior speed and accuracy.
• Patented Marble® optical technology – offers enhanced precision, ensuring faster response and smooth, reliable tracking.
• The larger size of the trackball – improves control while reducing hand and wrist motion.