I got my first from my employer. I loved it so much that I purchased one for my home computer from .PROS: Light, portable, extremely accurate, super long battery life, quick and easy setupCONS: The scroll wheel is VERY sensitive. In fact, I think it's too sensitive. When I try to center-click on links in a browser (to open them in a new tab), the screen almost always scrolls. It takes a very light touch to work properly. The other con is the way that the USB adapter is stored. If you are a road warrior like me, you will want to pull the usb adapter out of your laptop and store it. In order to do this, you will need to open the battery compartment on the mouse and then park the adapter in its slot in the battery compartment. The battery compartment cover is thin plastic, and I am always afraid that I will break it or lose it.