League of Legends (LoL) Question: Ashe build

I wonder what is the best item build path for Ashe as of now. I've had a lot of succes with both Berserker's Greaves --> Infinity Edge --> Vampiric Scepter --> Phantom Dancer, as well with Berserker's Greaves --> Blade of the Ruined King --> Youmuu's Ghostblade --> Infinity Edge. I figured out for myself that rushing Infinity Edge (at least for me) works the best, but I really doubt the optimal choice from there on.