Well, hears what i think about the both of the brands.
Nike:
-Usually goes for more confertable, while losing looks on most shoes
-Usually appealing, but over rated
Adidas:
- Goes for more flexible type of shoe
- Has its own cologne line
- Not as many off-brands chasing them as there is on Nike's side
In all, i love them both. In the end though, i would fully go straight to Adidas, because there shoes are more dependable.