Bob McKillop.
He's been at the same school for 19 years. He's quite possibly gotten the most out of his less talented sqaud (compared to high majors) and he's taken the program to uncharted waters at a school where athletics come second to academics.
The exposure he has secured for his program will make every mid-major player in America want to play on his squad. He's taken a team in a one bid conference to the NCAA tournament three years in a row. Every year he schedules one of the most grueling out of conference schedules in the country. He doesn't always win the tough ones, but pound for pound, his team could play with anyone. Heck they're doing it now undersized and with a lower talent level.
Strictly based on COACHING, Bob McKillop is my man.