The current state of brakes

I need to replace the front pads on my pick up. When I look at the different pads available, I notice that there aer a number of different types available. They range from metalic to ceramic to ceramix or several other types.

What is the difference between them? What do you consider in deciding what kind to replace the existing pads with?

I usually just put the original form the manufacturer in. At least I have found that they keep the wheels cleaner and last longer than others makes. I am sure some of the folks around here will differ on that with me.