The mouse has been in operation for over 3 years. Used daily. The quality of the plastic and the fit of the parts are perfect. I have never experienced any of the other problems described. Although, before buying, I read about horror stories like a double-click (in a week, a month, six months). My logo has not even faded, only a little bit on one side. The mouse is RECOMMENDED, and I suggest not to treat negative reviews as a fatal prediction. Negative reviews are just a manifestation of the statistics of failures and marriage. I myself wrote the first review on the mouse only after 3 years, but how many happy owners do not write them at all? In case of wear of parts, I stocked up with an encoder and mics, if anything, I just re-solder.