Who should the MVP of the 2009-2010 NFL season be?

Peyton Manning is always in the list when it comes to MVP's, but I also think that Adrian Peterson, Brett Favre, and Chris Johnson are also towards the top of the list. Drew Brees started off hot but has cooled down but he still has to be in the conversation. I also have to believe that Tom Brady and Maurice Jones-Drew should in the discussion also. What do you think?