I think the Chiefs have had a pretty good off-season.. Of Course, the Eagles have as well. So has Arizona. So has St. Louis. And, even Seattle has been pretty good despite not getting the "starting QB" everyone thinks they should have.
Tampa has been pretty decent as well..
The Raiders are definitely on the LOSERS side having lost guys like Zach Miller and Robert Gallery.
I think that San Diego has also been losers because of the loss of guys like Floyd and Sproles. Yes, they added Laurent Robinson, but I don't think Robinson is nearly as good as Floyd has proven to be.