Talk:Armor penetration/@comment-184.148.47.53-20121204031202

Does the % armor penetration from Last Whisper synergize with the flat armor penetration from Youmuu's Ghost Blade? Is it wasting money to get both? or do they not really affect each other?

if you have money for either but not the room for both, is Last Whisper the better choice despite it costing less?