It tends to loose signal and not function when I need it to
Do you have good control of the acceleration?
The features are nice and works mostly.  It tends to loose signal and not function when I need it to.  Leads to a few frustrating moments a day, and the battery life is terrible.  It has to be recharged at least every week.  Other comparable mice I've used only had to be charged once a month or once every other month.. 