Pros: BATTERY LIFE, size, weight, feel/quality of the materials
Cons: uhh..... none
I got this mouse as an Easter present over a year ago, and I've only changed the batteries once! I had looked at other mice before, and I didn't like the Microsoft mice. They felt cheap, and like there was nothing inside, they were all too lightweight. I decided I wanted a Logitech. I have a couple steering wheel and pedal sets for video games made by Logitech, and they always work flawlessly. And so does this mouse. And by the way, mine is black with the red accents on the side.