Thank you for your feed back emoriam (:
That´s true... Sorcerer´s shoes are can indeed be a wise choice for Corki But Idk, I always found Berserker's Greaves very useful too. But you may be right.

True, the two items can cause problems, if your game is not going smoothly.
But I find it to be very effective, in the mid stages of the game.
I don´t always buy these items in this order. Of course it depends on how the game flows, but I am positive in, that if you have a good early, This order can get the job done.

A really great boot option is Sorcerer's Shoes. They increase your overall damage especially in the mid game a lot because of the penetration scalings of Corki's abilities.
Building Infinity Edge right after Trinity Force is an arguably bad purchase order. You spend too much money on two main AD Carry damage items. Rather build BorK or TB after Triforce.