iv'e allways liked logitech iv'e just replaced my old one which lasted about 8 years with one i had stored away waiting for it to die
it just jappens to be exactly the same logitech mouse that survived the 8 years
lets hope this one lasts as long
i don't think they make this model any more known as a cordless mousman optical model no M-RR63
never had any issues with it over the years iv'e used this model