Agree. Natural is the way to go. We usually buy the Adams Natural PB, or the private label Organics Natural PB. Good stuff.
I used to get Adams but one of the grocery stores near me actually has a peanut butter machine. Flip the switch and it grinds the peanuts in the hopper right into a little plastic container for you. They also have the same thing for almond butter but its about twice as much as the peanut butter.