Also interested in doing the same thing, but
@B MIller gets first dibs.
It's just a personal preference thing for me.
I just think the Black Diamond/Base grille looks the best, suits the Bronco. It probably has to do with the older Broncos, the BD/Base grille is most-similar to the old 4th generation Bronco grilles. I essentially grew up in my father's 1989 Bronco XLT, and it was the vehicle I learned how to drive in. So their sentimental value attached to that look I suppose.
The Big Bend/Outer Banks grille is my least favorite. The Badlands/Wildtrak grille is fine to be honest, nothing I dislike about it... I just like the Black Diamond/Base one better.