Refurbished: Logitech Recertified 910-001799 M570 Black 5-button 1-wheel USB RF Wireless Laser Trackball Mice - Newegg.com
Logitech M570 Wireless Trackball 3D Model $49 - .ma .c4d .max .obj .3ds - Free3D
Logitech Trackman Marble
My everyday rider: the Logitech M570. Though it works well and travels easy, it hardly lasts me a year without the ball chipping or something else breaking. Any advice for better mouse-care,