What do Miss Fortune mains think?

From what I've seen, Miss Fortune performs much better when built with the cheaper, more potent armor-penetration items (like Youmuu's and Duskblade, perhaps a Dominik's or a Death's Dance). Do you guys build her like this, or do you stick with "normal" ADC items? Do you like that armor-penetration items synergize well with her kit? Do you like her new kit in comparison to her older kit (with Impure Shots <3)? What changes do you think need to be made to make her more inclined to build regular ADC items?