The old Logitech mice lasted 10 years, the new ones don't even last a year. In the last two years I have bought MX705, G500 and G600. All three, after several months of use, began to double-click. And this is also taking into account the horse price tag and completely small loads (lazy office poking, did not play anything). I suspect this is a planned obsolescence. In general, I put a bold cross on the Logitech brand for myself.