There is alot of debate going on atm about whats better for a rouge to stack. Armor pen or agi. I know that cat druids when they get to a certain point armor pen is more useful than stacking agility. Im wondering if this is the same for rogues.

My armory link is here: The World of Warcraft Armory

I also have Mace specialization. That means i have 15% more armor pen when using maces?

BTW i have around 100 Armor pen not including mace specialization. It didn't seem to show in the wow armory

Thanks for you help