DD was my favorite of the Kiffin-Pruitt coaches. He just seemed like a goofy, down-to-earth guy. I hated the outcome of his years, but I still enjoyed him as a person. Pruitt was my least favorite. I always got the sense he was an idiot who conned his way into the job. I bought into the Butch hype, but then realized after about year 2 that he was a used car salesman. And Kiffin was Kiffin, I respected him but I also didn’t feel he was right for the culture at the time.
As for Heupel, I enjoy his style, he’s not flashy but he’s also not an a-hole. He just wants to do his job and coach football.