As had spare my MX1000 was unfortunately getting on in years ago, it should be of Logitech again remained only these MX mouse. Now, after a few months in use I am well used to it that there are not as many keys as the MX1000. In her hand she is good and can serve well also. But at the MX1000 it comes not ran there was better scrolling and the two keys are made the work easier. Well I'm holding back the shortcuts learned the yes at WIN8 anyway espacially. Oh yes, the MX now funzt least under Linux with the default values. Can of course not always understand why the Logitech MX1000 no longer builds in my eyes was the best of the rodents there was something new and polished Linux made suitable and would sell by itself, Logitech should even think about it. Therefore, only 4 *. Greeting