If you're seeking NCAA bracket help consider the qualities that a successful tournament team typically possesses. National championship teams are usually athletic, have one or more NBA-bound players, have solid depth on the bench, rebound well, have guys that can post up and score, shoot the 3 ball well, and don't rely on their defense to make up for offensive ineptitude.
Don't get me wrong as defense is very important, but teams that consistently don't shoot the ball well have a difficult time going deep into the NCAA tourney bracket. Playing great defense can often make up for poor shooting and turnovers, but that doesn't work when you play elite teams who are solid on both ends of the floor. You have to be able to make plays and score to win the national championship. Teams making Elite 8 and Final Four runs typically have similar qualities to the team who wins it all.