IMO, Smart is a good coach but overrated. At this point (we still don't know for sure about DeBoer, just because he is from another part of the college football universe and for only 2 years in the P5, though he beat 2 ranked teams, one of which was P5 at Fresno, also outgained and almost beat #11 Oregon, so the early returns are very promising), I would rather have DeBoer than Kirby or frankly, any other coach. With far less talent, he beat Sarkisian and Lanning each twice in the last 2 seasons, with a little less talent, he also beat Riley twice. IMO, Alabama came out smelling like a rose.
His manner is very understated, which I love, but he has a white-hot fire burning in his belly. Great fire and drive under great self-control are typically potent. My primary concern is that if he has a lot of success, how long will he stay at Alabama if the NFL calls? I always thought Saban would likely stay for multiple reasons, but not as much with DeBoer.