I recently picked up a Logitech MX-1000 wireless laser mouse and I am impressed with it:
I’m using this at work and it’s fantastic. Not having a wire is great because it doesn’t catch on the little ridge in my keyboard tray. And my one big concern about it going in, battery life, is no longer a concern. Even when I forgot to put the mouse in its dock one night, I still got a full day’s use of it the next day.
The only minor snafu was that when I installed Logitech’s software, my back and forward buttons weren’t working in Firefox, but after a quick search on the Web I discovered how to go into the Logitech control panel and unmap those buttons (mapping to Alt-Left and Alt-Right works too) so that Firefox sees regular old mouse events that it knows how to deal with.