I am not a football historian, but I believe Steve Young, Bret Favre, and Curt Warner are 3 hall of fame qb who found success with their second or third teams. Carson Palmer, and Drew Brees were not the definitive franchise qb until their second stop, our own Jake may kind of fit in that category as well. Currently Tanahill, (not sure on spelling) is playing much better with his second team. I don't know if Sam is the answer, but there have been several qb who have been successful after leaving their first team.