A little defence of my mouse, still going strong despite her age
After reading a lot of negative reviews about this mouse, I wanted to defend a product that I've had no problems with. After almost 8 years of use, it still works perfectly. The buttons have never jammed and the scroll wheel is still in very good condition. As it's battery-operated, I was afraid I'd have to buy new ones very often, but no, despite hours of playing, a battery lasts me at least 6 months (often much longer, I don't keep a battery change diary, but I have time to forget that it exists between each change).
About a year ago, one of the non-slip 'patches' started to peel off, which is (a bit) annoying.
The only reason I'm buying a new mouse is to have one to take to work and leave behind.
Summary: a good mouse, for the price, no real reason to complain (unless the production quality has dropped to a point I can't quantify, on the scale of a single mouse bought in 2016).