This standard Microsoft mouse, replaced the same model I've had for several years. I prefer a wired one, as its connected to a tower PC and I got fed up with changing batteries in a previous wireless one. My last Microsoft one did me proud, and was very comfortable to use. The only reason for the replacement, was the last mouse had a very intermittent right click, which got annoying. The new one works fine, is positive when clicking, and the scroll wheel is lovely and smooth. It can be used with either hand due to its shape, although I am right handed and find it just fine. If you want a simple, uncomplicated mouse that's easy to use, I'd recommend this one.