This mouse works great. No drivers to manually install, just plug it in to ANY Windows PC (probably Linux and Mac too, though I haven't tried Mac and have only tried a couple Linux installations) and after a few seconds of automatically installing the basic driver it's good to go. Buttons have a great feel. Slide pads underneath are low friction and work well on nearly every surface. Optical sensor works well too and there are very few surfaces you can't mouse on...I have been using these mice (about 6 of them) on different PCs, in different places, on different surfaces, for several years now and they're all I buy for portable wireless mice.
Note that I said PORTABLE. This is my only complaint with these mice...they are a little on the small side. At a desk where the mouse is not going to travel but will just stay there all the time, I have instead opted for a full-size wireless mouse. But these (about 3/4 the size of normal mice) are just slightly less comfortable and efficient to use than a full-size mouse. The obvious advantage is that it takes up less space in your backpack, laptop bag, or wherever else you transport your gear. But also keep in mind that my hands are on the big side...a little larger than average for a man's hand...so for me to use these for several years with little trouble means it should work fine for most people most of the time. But of course, everyone has their personal preferences. I've been good with it. And no stars off for size (of course) because it's SUPPOSED to be a portable laptop mouse, it's SUPPOSED to be smaller than normal. If that's not okay with you, buy a larger one.
Overall GREAT product though. And by the way, battery life is excellent and no random disconnects. Final note, I haven't used them for controlling a PC across the room (like a HTPC or something) so I can't comment on range distance.