User blog comment:Hyperion602/A new way to play Vayne/@comment-8506165-20140217192540/@comment-11603965-20140219194048

The thing you also gotta think about is how good a Vayne would be able to utilize the extra DPS you get from PhD or Shiv. A level 18 Vayne with BorK, PhD, Zephyr an TriForce would have her base attack speed multiplied by 170%, giving her about 2.1 AS (I hope that's right). You really have to question how well a Vayne can kite in fights, since I don't think that you'd be able to fully utilize all that AS unless you're a professional ADC. The same reason I always recommend low bracket players to buy Zeal after BorK, but get something like IE or LW after that instead of PhD. Most player just don't kite that well, and especially in lower bracket play these people are rarely seen. I'd say a Black Cleaver would be more useful from a realistic point of view although PhD or Shiv would be more useful from a theoretical point of view.