Ok so I am confused about lockers. If I understand properly their purpose is to make both tires function and spin at the same rate. The benefit being that it will not allow only one tire to spin while the other is not. However, I am confused about the difference in an air lockers and e-lockers. I know one is air actuated and one is electronically actuated, but what is the pros and cons of the air lockers and e-lockers? What makes on better than the other?