Hi, I have a Logitech cordless Laser mouse - works on any surface, no mouse-mat needed. Not too big, not too small, I find it very comfortable to use. A great thing is that when the battery gets a bit too low, a window will pop up giving you a warning - so you can change battery without messing-up anything you are working on. I have had other cordless
meeces that just froze when battery was too low -and a freeze can mean all sorts of things, so one does not immediately think - mouse battery!