I've been using it for a year and a half. Very satisfied. The perfect mouse for work and play. There are very few quality mice with two buttons. For some reason, it is now believed that the more buttons, the better the mouse. Personally, I categorically reject this approach and remain a supporter of reasonable minimalism. Its pros: 1. Works on almost any surface without rugs, stable without any breakdowns and glitches. Budget Logitech constantly ripped off the cursor on the new table. 2. Only two keys. More than two is an unnecessary overkill. IMHO. 3. You quickly get used to the backlight, it does not interfere. You can reduce the intensity of the backlight, it will be completely unnoticeable. 4. Through Synapse, a bunch of parameters are configured: dpi, frequency, backlight and all sorts of other nonsense. Has cons: Would make silent clicks - there would be an absolutely masterpiece mouse. Willing to pay for it.