Anti seize on spark plugs in aluminum heads?

So upon finding the cracked porcelain on my number 1 plug im going to replace all 8, my question is ive never put anti seize on them before and had no problems removing them, edelbrock says to use anti seize and torque to 10 ft lbs, ngk states that their spark plugs are coated with a special coating and no antiseize is needed and they recommend 18-22 ft lbs.