I'll bite.
Bo. And it ain't close.
In 1999, Nebraska had a National Championship team. The only reason it didn't happen was because Solich's coachtarded his way into a loss at Texas.
Now, that's not to say Bo is perfect. Bo is a better game planner than Solich and, at present point, a good recruiter ( see Stanton, ET al). And Frank was (is) an awful big time recruiter.
But you give Bo that 99 team, we lift up another crystal football.
Umm and Bo has COACHTARDED US INTO ANY LOSS'S IN HIS TENDER?? lol.