Last week I was working on my Mac Pro and while I was moving the keyboard tray the keyboard fell off complete with the RF receiver attached to one of the USB ports. The keyboard made it but the receiver was broken, so off to the store to get a new one (that has a receiver maybe 30% the size of my old one)
I have a logitech blue tooth mouse. It is really nice. Simple and works perfect. Check them out. I agree with the other poster, the Mighty Mouse is not very "mighty." It seems unsteady and not precise.