The quality of the switches in logitech product in the past few years has become laughable. I am currently using a 8 years old 502 because the newer one I got broke after nine months...
Now at work I use a cheap Dell wired mouse that works perfectly, and at home I have a Razer Deathadder Elite (or is it the pro X ultimate creator edition RGB plus max turbo..), and aside from being a little goofy-gamer-y, it works great too.