Our mac came with a wired keyboard and mouse which we don't like. I bought wireless optical substitutes, first by Logitech and a second by Microsoft (Go figure that!). Both came with instructions and we downloaded the most recent drivers and software. Still the mouse drags too much. When tracking on ANY surface of ANY color, both of these substitute mice get CLOSE to the target I'm trying to click on, but then they stop. I have to drag the mouse REALLY SLOWLY to get to the part of the page I need. Any ideas about what WIRELESS mouse I can get that will work more like the mice in my past? Thanks.