Interesting debate

Peyton Manning just signed a 5 year $90 million contract. Peyton is a 4x MVP, 11x Pro Bowler, Super Bowl MVP and his next TD pass will be #500. I just read an article about whether or not the Colts will regret this contract. What's the problem?...Manning turned 35 this past March and will be 40 heading into the last year of his contract.
Has the future Hall of Famer lost his touch? How will he perform in 3 years? In 5 years? Will he be live Favre and be just a poor reminder of what he used to be? Or will he be like Montana and still succeed after his team gives up on him?
Manning just may be the greatest QB in NFL history but sadly he may not be the best QB in the NFL right now anymore. The one advantage I give Manning over Brady is that Peyton won no matter how bad the rest of his team was. When he led the Colts over the Bears, they had an average at best defense. He can make any WR look like an All Pro, he studies game film in his sleep and is the undoubted Captain of his team.
I say Manning will play until he's 40, or until he wins another ring, and I don't think the Colts will ever regret locking up Manning for the rest of his career.

Thoughts? I know Sarge does...