Trinity force + Zephyr gives more movespeed than any boots(apart from mobility boots out of combat, but even then this combination should be able to closely compete with them).
What about the specific boots bonuses?
Zephyr gives tenacity. Zephyr gives attack speed. Zephyr gives cooldown reduction. It is simply a combined version of most of the boots. The only stat it doesn't inherit is Ninja Tabi's. Getting Ninja Tabi's is a reasonable argument against heavily auto-attack reliant teams, but with Zephyr you should have much room for tankiness later on. Zephyr+ Trinity Force are two damage items, and 4 tanky items can be taken with them.
What is required:
- A champion who can benefit from both Trinity Force and Zephyr. Because of this, most AP champions are out of question. But i can imagine it working well on Diana and a few hybrid champions.
- A legitimate flat movement speed. Even though Zephyr and Trinity Force are both viable for [[Teemo], he is