I’ve used the Logitec Optical Cordless Mouse nearly two years now. In fact I bought two, one for my desktop PC and one for my PowerBook G4. It works seamlessly, and the two work side by side without interference. Just make sure your cell phone is at least three feet away from the USB base station for the mouse. The cell phone can cause some interference.
This is the best mouse I’ve ever had (three button, wheel). Of couse it takes two AA batteries, but … unless you are broke, you can afford to switch the batteries every month. The computer lets you know when the batteries are low, which means that you usually have a day left in juice. I keep a value-pack of AA from Costco on my desk so it is never really inconvenient. And contrary to popular belierf, the mouse doesn’t go bezerk and get unpredictable when battery power is low. There is a critical amount of power needed to run the mouse at 100%. When that falls below 100%, the mouse shuts down … but again, that is with warning from your system a day early.
NOTE: Optical mice are strange beasts. You need particular surfaces in order to keep the pointer from jumping all over the place. Glass table tops never work. Metalic surfaces work horribly. Generally, a mouse pad works great! Certain table tops are OK too, but when I run into a situation with my PowerBook where I forgot to bring a mouse pad, I just get a A4 sheet of white paper and use that. It works great.