1. Ergonomically it is very nice. It is a medium-sized mouse and fits in the hand very well.
2. Good weight. You know you have something in your hand but it doesn't weigh you down.
3. Moves very nicely on all surfaces. There are four pads on the bottom which facilitate easy movement.
4. Reception from computer to mouse is very good and there is no lag or skipping.
5. The Application Switch button works very well. One push and all the applications open on the screen find an empty space and you can select a new open application. It works very well. Much better than the...