Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: Uncomfortable and difficult to use
Review: It's hard for me to believe that a company which makes such excellent computers would stick with this horrible 1-button design for so long. The shape is specially designed to induce carpal tunnel, and because the ENTIRE MOUSE is the 1 button, it's difficult to move it around without inadvertent clicks.Luckily you can grab virtually any other mouse and it will work without any setup. You'll be much happier with something that has a nicer shape, 2 buttons, and a scroll wheel. If you have to have a bluetooth model, logitech makes some in the same price range.
