LogitechM570 Wireless Trackball Mouse – Ergonomic Design with Sculpted Right-Hand Shape, Compatible with Apple Mac / Microsoft, USB Unifying Receiver, Dark Gray

Should I get a new one? I had one of the older wired red ones and that thing was smooth as butter. I've had this newer model for about a year now and it drives me crazy. It is just not as smooth as the red one. I'm wondering if I just buy a new one if it'll be more what I'm looking for. I've cleaned this thing out a hu…

Does this mouse help hand pain? I have muscle waisting and pain in my hands, and I was thinking of pairing this with a Apple Magic Track pad to help m

How long does the battery last if you use the mouse 8 hours per day, 5 days a week at work?

I need to use this device with a Linux system. Does this mouse support "middle-click"? (i.e. works like a 3 button mouse)?