Also, once I broke my mouse, gave them a call and said "We are sorry that mouse is not in production anymore... So I will send you the newest version for free (80 euro price tag)."
I've just been unlucky, I guess. The longest Logitech mouse that lasted me was Logitech MX500 (around 3 years), which is funny because I also had top of the line Logitech mouses (MX Revolution, Mouse MX etc.). They were usually the least durable ones.
