been using a pair of microsoft intellimouse explorers for a couple of years... works great... you notice an erratic pointer movement long before the batteries die... so far never died mid trade....
check out this great mouse or set of mice? http://www.geekologie.com/2006/07/finger_mouse_is_super_small_mo.php --RS
I have 2 laser MS 6000 mice â one for the right hand and the other for the left. The left is for a 2 screen display system the right for a 1 screen system and corresponding 2 keyboards, one above the other (one keyboard is on a sliding tray and the other on the table.) With this setup I rarely have memory lapses as to which computer Iâm on. I have run the cords for the mice under the desk hung on plastic ties, such that for all intents and purposes they are cordless to me. I tried a cordless optical mouse, but it was not precise enough particularly with a 3D rendering program I run, and I was obliged to return it. I cannot comment on a cordless laser mouse since I have not bought one. I learnt to use my left hand when my right hand became too painful for operating a mouse (graphic software is very mouse intensive although I could use a Pen & Board). I think I am slightly faster now with my left hand, and both hands are pain free. The MS 6000 is a 5 button mouse with enough features to satisfy most nearly anyone. Itâs also ambidextrous design and a key reason I bought it. The chief advantage of laser over optical is laser you can use on shiny surface while optical is quite fussy about the surface.