The Greatest QB of ALL-TIME?

Who is the greatest QB of all-time? That is a tough question. Is it Brett Favre? Brett Favre is sure to be a top 3 with out a doubt. Everyone has there there reasons why they would choose their greatest QB of all-time. Is it the Super Bowls rings? The stats? The era they played in? Well if you are going by super bowl wins then its got to be Terry Bradshaw and Joe Montana they each have 4. If you go by stats top 2 would have to be Brett Favre and Dan Marino. Well if I could take a QB to start my franchise I would take Peyton Manning he is one of the best precise passer ever. So its all about your opinion. Now that Favre is back, and lets say he wins a super bowl its kind of hard not to crown him the greatest QB of all-time.