The main reason: The scrolling is very jerky and not just as one would expect from the extremely good trackpads for many years. While it is on the mouse, clicking the scroll wheel on and exhibit, but the driver side makes no difference. The smallest jump is always equal to about one full line and that's ultimately just a totally different feeling than scrolling with the trackpad. Using the trackpad can be absolutely effortless scroll with pixel precision, you can scroll this slowly while reading text, etc.
With the Logitech mouse, however it is easy on that one long text pages lose orientation, simply because the scrolling is so erratic.
All this is probably incomprehensible if one does not know the Apple trackpad, but it's just a shame that you have to make the decision between good scrolling and good "Mousen" and still can not get both in one product after all these years.
This deficiency is now nothing which specifically applies only to Logitech, on the contrary, all mice (except the comic Apple mouse) are affected. But I still give only 3 stars simply because I find that you can expect for the price that the manufacturer makes about something and thought that implements the driver. Particularly unfortunate is because the click-less scroll wheel would be perfect is capable. In addition, Logitech would have to make only once for just about all of the mice, but did not, unfortunately, the foresight to stand with such a feature of the cheap mice.
Furthermore, can be in the driver does not change the mouse acceleration, so you need to use a tool like USB Overdrive definitely, if you want to control this very important parameter.
For me, a rather crude omission. The people who make it do not use itself, which seems to me quite clear, or really just to play.
Only determined to play great, but for me it is too one-sided. For normal desktop Mousen inappropriate for me, way of scrolling.
The hardware still: The Dark rough plastic on the sides is really rough. Do you have to see for yourself whether you like that.