Yes, I've used the logitech one (with the blue marble) for probably over 15 years now as I was getting wrist pains from using a mouse. Advantages are that you c

Yes, I've used the logitech one (with the blue marble) for probably over 15 years now as I was getting wrist pains from using a mouse. Advantages are that you can just rest your hand in one spot, and even rest the trackball directly on the laptop (bottom right corner) if it is large enough. My only complaint is that the trackball (on the M570) should be 2X it's current diameter, I don't know why they make them so small.