UFC 150 site official, main event not yet

The show takes place 8/11 in Denver.  The targeted main event would be Benson Henderson vs. Frankie Edgar for the lightweight title.

Henderson was born in Colorado Springs.  While he grew up in the state of Washington, he did return to the Denver area where he started his MMA career before moving to his current home in the Phoenix area.

Who would you have the most interest in for Fabricio Werdum's next title defense?