Not sold on CK yet. I'm content with our QB (something I never thought I would get to say as a Lions fan) and I wouldn't trade Stafford for anyone at this point. For his age, experience, and talent, I'd take him over any QB at this juncture.
He's young enough to be considered a young QB with years and years left on him.
He's old enough to have 5 years experience.
He's talented enough to be in the discussion for "elite" every year now.
Guys like Peyton, Brees, Rodgers, Brady... they are obviously the better QBs, but they are also older and in their final years in most cases (Rodgers being the exception).
Guys like Luck, Kaep, Newton... young, but haven't done much yet, and you don't know how they will grow.
Guys like Ryan and Flacco have the credibility, but Stafford has more raw talent to be tapped.
You put it all together, and you have an excellent blend of a QB that is prime time ready, hasn't hit his peak yet, can give you 10 more years instead of 2 or three, and has a tremendous upside.
Yep, I'd take him over anyone for long term value,talent, and experience at this point