Forum talk:Neekerivittu/@comment-7537520-20130403065617/@comment-4296199-20130404235022

tru that BotRK does more damage to tanky bruisers, but it's still a niche pick for Zed. His basic skills still scale off of bonus AD, which is a large portion of your damage, and for the same price you can get bloodthirster.

Overall, BT is more efficient due to the better stats you get. For armor pen, get last whisper.