Yahoo Sports! with assistance from Rivals.com does a nice job breaking down the new quarterbacks around the country, including Braxton Miller with Ohio State.
Here is what they wrote plus a link to the entire article; it is well worth your time.
Pryor started as a true freshman, and his departure could mean that touted true freshman Braxton Miller gets the starting nod for the Buckeyes this season. Miller enrolled early, went through spring practice and was praised for his knowledge of the offense and his athletic ability. Senior Joe Bauserman, who barely has played in his career, sophomore Kenny Guiton and redshirt freshman Taylor Graham are the other candidates. Despite all the turmoil, Ohio State - on paper - still has the most talent, top to bottom, in the Big Ten and has a realistic shot at the league title because of a solid defense, the Big Ten's best offensive line and some good skill-position players. Miller has the most upside of the quarterback quartet. The flipside, obviously, is that he is a true freshman and is going to make mistakes. Can the coaches live with the inevitable mistakes? After what should be relatively easy games against Akron and Toledo to open the season, the Buckeyes have Miami, Michigan State and Nebraska in Games 3, 5, and 6. To win those contests, the Buckeyes will need to be sharp offensively.