Finally - I have my big ball back! - so-so quality
Richard C. Drew "Anaal Nathra/Uthe vas Bethod..., Amazon
17 August 2012
Summary: I've used track balls for over 10 years. Killed the mouse and never looked back. Had the Kensington Trackballs with what looked like a cue-ball nestled in the control...
Summary: I tried an older model of one of these that my friend has and the ball and scroll ring are very smooth. The one that I purchased and received is not.
Summary: It took me a day or two to become accustomed to using the trackball, but once I did I love it. It solves my issue with picking a bad starting spot for the traditional...
Summary: To begin, this is the fourth trackball I have owned. The first two were the old putty colored ones I used with my older Mac's and were much better quality.
Summary: It works great except for the fact that it is missing 6 buttons that my old track ball had, but they do not make that one anymore, and the old model would not work with