Green Bay.
I've lived 20 minutes from the Meadowlands my entire life and pass through the complex on Route 120 right by MetLife on my daily commute. I already have my tickets for week 16 when the Packers visit the Jets.
I grew up on Madden '05 and '06 and my favorite players were Donald Driver, Bubba Franks, and Ahman Green. There is also a very loose family connection with my dad being an all-sports fan type and him going to Fordham like Vince Lombardi, and that's an aside from Lombardi's connection with the Great State of NJ from his time coaching St. Cecilia's in Englewood. I also have a couple friends from grade school and high school who were also Packers fans, so I was never alone growing up.
I've seen the Packers play in person five times so far. Thrice at MetLife, once at FedEx, and once at the Frozen Tundra of Lambeau, which was everything I dreamt it would be.
I simply never cared for the Giants or Jets. It also helped that my dad never raised me to be a fan of an NFL team. (He watches the Giants every week but he's not a fanatic. The Yankees are the team he lives and dies by and that was the team he raised me to root for that was non-negotiable.) I actually
hate the Giants, admittedly because they beat us in the playoffs on the way to their last two titles. The Jets I have apathy toward, don't like 'em, don't hate 'em.
Now, imagine how insufferable I was toward all my friends the day after Rodgers' Hail Mary in the playoffs against the Jints.
(Beating the Cowboys the next round was also glorious. Anyone local to the NYC Metro knows we have a lot of Cowboys fans around here.)
With the exception of the Packers (and Liverpool FC), I'm a local boy through and through otherwise. Devils, Yankees, and Seton Hall basketball.