G500 here, Have it for almost two years now. On the end of the first year of use it started acting up, like it was gonna die, but then I was like "no bro, please...", and it survived and now I have no problems at all. No jokes, it's like it got sick, was skipping and disconnecting, and then to my big surprise it got better. I really like the feel of the mice, software, and adjustable 3 levels of dpi.