I just upgraded from the thumb-operated Logitech one I was using and it’s night and day! way easier on my hands.
I also like that you can assign a key command to dramatically slow the movement down, it makes drawing in automation in Pro Tools so precise. So with the macro keyboard I hit a button switch to pencil mode, click down, and then press a button that holds Shift+Ctrl+Opt+Cmd to slow the mouse down while I carefully draw it. Then when I release the button it sends Cmd+7 to switch me back to the Smart tool!