Have the mouse an old Logitech Dualoptical replaced (the principle still works, but loses no feet and it had to stop what new forth). The design is really cool and I really like. Not too flashy, not easy. The processing also affects quality. So I like it. On the new "Pointer Speed" I had to get used, but I get my old Logitech DualOptical front part a little bit more precise. Even after a now very long adjustment period (several months), it happens sometimes that I "next please". This has never happened to me with the Logitech. As the whole, however, not so common, maybe it can also just lie on the higher sensitivity of the mouse. Without this "problem" there would be 5 out of 5 stars.
