I bought this mouse there is some months now, and basic, it is a good mouse buttons are both really quiet, which does not prevent to feel that we click, so for me no time to adapt. For roulette, it is not as quiet, but even less audible than on a normal mouse. No problem either on the movement of the mouse, which is going very well. By cons, for the other three buttons (DPI setting and the two buttons on the side) if they worked fine at first, after a few months they dropped me, no way to draw anything, and after research it seems that it is quite common on this model. Since the mouse liked very much, I ordered another, but unfortunately she left live since I had directly concern (on this subject, the national defective goods is handled beautifully by Amazon)
In conclusion, a very good mouse for basic functions, but unfortunately not reliable enough for the rest. I now expect the availability of the Nexus SM-8500B to have the same functions, hopefully with a bit more reliable mouse.