Negative Positive
Title: I love this thing.
Review: I switched to trackballs years ago when I developed a cramp in my hand from gripping the mouse too hard.But it's hard to find a quality trackball at a reasonable price. The Kensington Expert series has been my choice for years.However, I've been waiting for the optical enhancement for a long time.The large ball makes the cursor easy to control for small and large mouse movements.The optical sensors make the ball less susceptible to interference from debris such as crumbs and cat hair.
Is the review positive or negative? 