For usability, I much prefer the trackpad to the mouse, especially since I alternate between my iMac and my MacBook. However, I am going on my third trackpad now, in less than three years. A new trackpad works great but, at some point, demons enter into them. At first, it seems that putting freshly charged batteries helps. But once the problem begins, it is not long before batteries are being replaced every couple of hours.
I don't know what's going on inside, but it highlights things that I don't want it to highlight, even when my fingers are not even touching it. While I am typing, it will jump around to different places in the document, highlighting portions of it along the way, so if I am not staring at the screen while I am typing, I will look up to find either nothing there at all, because, if it highlights the entire text, the next keystroke will delete it, or I'll find a useless garble of text.
While I am trying to move from one place on the screen to another, my trackpad is latching onto things and opening them, or dragging them along with it. I can see that people have been having similar problems for years and I am having trouble figuring out why Apple has not corrected the problem. When they can produce a product as excellent as an iMac, why saddle it with a defective peripheral?
Right now, I'm using a Microsoft mouse until I can either find an exorcist for my trackpad, or the money to buy another one.
