Notebook mice are too small for me to use on a regular basis, but my girlfriend has one of these and she likes it.
I dropped it off the desk a few days ago (haven't told her) and it still works fine. The sound it made when it hit the tile made me think it was done.

I've had one for a couple of years and really like it. The one thing I don't like is that the dongle tends to lift out of the back especially after a lot of use. When it does that, it can run down the batteries fast.