After decades of using the standard mouse cursor in Windows, and loosing track of it more and more as displays and resolutions grew, I have finally changed it to black and increased the size of it one step.

I find it so much easier to locate my cursor across my 1440p monitors, it is just clearer what is going on.

In the office I use a turqoice cursor, and at home I use the black cursor, it is a slight annoyance to get used to it, but wow, it is fantastic!