I used a Logitech Trackball for more than a decade due to De Quervain syndrome. My specific experience in this topic is that the TB allows for high speed macro

I used a Logitech Trackball for more than a decade due to De Quervain syndrome. My specific experience in this topic is that the TB allows for high speed macro motions (RTS control), often easier/faster than a mouse; but for high speed precision (headshots), the mouse wins every time.