The Carbons. I've owned both cleats and I like Nike and the Vapor Carbons better.

Actually the NFL's new uniforms are by Nike not Adidas

So far from what I've seen, Addidas' Scorch series are the lightest. I bought a pair about 3 years ago and I loved them. They do fit a bit tight width-wise but they're very light and detachable cleats are always the way to go.

Adidas cleats

The addidas scorch low cut with plastic cleats

my son-who wears an adult size 10-is a wide receiver and a lacrosse middie-has worn these for a couple years. absolutely loves them. weigh 9 ounces-the lightest weight football/lacrosse cleat on the market. there are lighter ones for soccer, but with little foot support. the scorch competion has plenty of support.

Adidas is coming out with a new cleat later this month-5.8 ounces-no idea about the foot support. it's called the Adidas F50 adizero.