Especially the possibility of mouse with both cable and to operate without, for me were basic, but spend quite a lot of money for this mouse. But I had expected with a high-quality mouse. Unfortunately I did not get.
One leading the way: As long as the mouse works, there is per se nothing to complain about. The Logitech software works well, the possible settings are varied and should allow you to configure the mouse to each that he actually perfect for him speeds, depending on the application, always has on the DPI buttons on the mouse.
For my hands, the mouse could be another ticking higher. I have average sized hands (good 20cm long, 9cm wide), but I also use the so-called "Palm Grip" (the palm is on the mouse), which today is probably the exception. Most will probably be happy with the size of the mouse when you move the mouse in the "Claw Grip" (the mouse is out with her fingertips and the palm stands out from the mouse down).
The opportunity also to operate the mouse wheel "continuously", is for me a pure gimmick and to use only rarely in practice, however, the mouse wheel in "step" mode is quite successful. The same applies _an THEMSELVES_ for the remaining buttons on the mouse.
Why "in itself"? Well, the reason for 2 stars for me is that the debouncing of the left and right mouse button after about a year weakened slowly and use the mouse is now more or less useless, because every second click is interpreted as a double. For 100 the price is, in my opinion, just not in it. This is something I expect from a cheap no-name mouse for 10 to 20, not for a "luxury" device in this price range.
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Conclusion for me: the mouse equivalent to the use of the prize, is thus quite high class and fun. Unfortunately, the longevity does not fit the price.