Sold all items and got 5 warmogs and 1 atma's.
i remembr to do tis
Anyway, I had always been told that I should avoid those items, as armor pen is situational and all that and yada yada and nobody bothered to tell me anything.
Their team didn't have much armor anyway.
EDIT: It was also the lifesteal that I had that carried me through many situations, often quite narrowly. I feel that if I hadn't gotten the second bloodthirster the game would have been over much more quickly.