Difference in quality is negligible. I personally like more Nike apparel but that's just me. What I'm really concerned about is 1. The money we are getting in this deal. Did we take less to switch? 2. Will we be able to choose what we wear and how it looks? That's is the most important thing to me.
Disclaimer: I'm 23 and prefer our classic, no frills look that Adidas allows us to wear.