Cincinnati is in a tough spot if these are their choices.
Calhoun makes sense, but is Cincinnati that much better of an opportunity than his current job and could be do better. At 44, he needs to do better quickly before he turns 50.
Groce is 54. If I was an AD at a school like Cincy, I don't think I'd be looking for someone in his mid 50s. The older you get, the faster you get old.
The guy from Miami makes the most sense. Young guy. Good energy. Undefeated regular season. Plays an exciting style for the fans to get behind.