I voted for Pro Style. Unlike Professional football colleges can carry 85 + walk-ons on a roster, granted the talent level is different. This allows college coaches to expand what they are willing to risk players; ie QB's, to do. While it is within the rules, it exposes skill position players to the possibility of injuries. Certain programs can take that risk because they are well positioned to do it, meaning they have back-ups to replace skilled players if injured. Pro teams can't take that risk.
The defense is at too much of a disadvantage against spread offenses. In my estimation if the offense puts 4 or 5 receivers within three yards of the l.o.s. then the play must be run as a pass play, the QB could not run with the ball beyond the l.o.s. If there is at least three backs in the backfield you could run either a pass or run play.