I use a wireless keyboard and wireless laser mouse. Excellent since my computer is also the main DVD player in the house, I maintain dual screen between my moniter and the HDTV above. I can then use my mouse from anywhere in the house, as a remote when we watch movies.
The pain comes when I’m using Blender. I can kill a set of batteries in my mouse pretty quick holding MMB for long periods…and the keyboard has a battery protection factor, if I hold shift, or alt/shift for more than 10 seconds, it times out. THAT makes me mad if I’m trying to do detail selection.
That’s not our topic tho, so my input is this: My laser mouse works everywhere. In fact, it only has to be in proximity to a vague surface to work. It has never needed cleaning.
My daughter’s computer has an optical mouse attached. It’s a royal pain. The surface under it must be clean, homogenous color, non-reflective, and sometimes a microscopic piece of fuzz gets in the lens and presto, epileptic mouse. Useless for precision 2D or 3D work.
I say laser is superior, but if I had a choice between optic or ball mouse, I would definitely choose the balls. In 15 years, I only had 2 ball mice die…from cord failure.