I trust the Razer brand.

The dongle on my Razer Hyperspeed V2 mouse, which I bought two years ago, was broken the day I received it; it wasn't working and the computer wasn't recognizing it. At the time, I didn't have the time to deal with the complicated warranty process, so I didn't bother. Now I'm requesting a new dongle. I wanted to try my luck with Razer because I believe they are a customer-friendly brand in these matters. My mouse is almost in pristine condition, practically brand new.